Webster's Unabridged Dictionary - Letter C - Page 35
Cephalad (adv.) (Zool.) Forwards; towards the head or anterior extremity of the body; opposed to caudad. Cephalalgia
Cephalalgia (n.) Alt. of Cephalalgy.
Cephalalgy (n.) (Med.) Pain in the head; headache.
Cephalalgia (n.) Pain in the head caused by dilation of cerebral arteries or muscle contractions or a reaction to drugs [syn: headache, head ache, cephalalgia].
Cephalalgic (a.) (Med.) Relating to, or affected with, headache.
Cephalalgic (n.) A remedy for the headache.
Cephalanthium (n.) (Bot.) Same as Anthodium.
Cephalaspis (n.) (Paleon.) A genus of fossil ganoid fishes found in the old red sandstone or Devonian formation. The head is large, and protected by a broad shield-shaped helmet prolonged behind into two lateral points.
Cephalata (n. pl.) (Zool.) A large division of Mollusca, including all except the bivalves; -- so called because the head is distinctly developed. See Illustration in Appendix.
Cephalate (a.) (Zool.) Having a head.
Cephalic (a.) (Anat.) 頭部的 Of or pertaining to the head. See the Note under Anterior.
{Cephalic index} (Anat.), The ratio of the breadth of the cranium to the length, which is taken as the standard, and equal to 100; the breadth index.
{Cephalic vein} 頭靜脈 A large vein running from the back of the head alond the arm; -- so named because the ancients used to open it for disorders of the head. --Dunglison.
Cephalic (n.) A medicine for headache, or other disorder in the head.
Cephalic (a.) Of or relating to the head [ant: {caudal}].
Compare: Phrenitis
Phrenitis (n.) (Med.) Inflammation of the brain, or of the meninges of the brain, attended with acute fever and delirium; -- called also cephalitis.
Phrenitis (n.) See Frenzy.
Cephalitis (n.) (Med.) Same as Phrenitis.
Cephalitis (n.) Inflammation of the brain usually caused by a virus; symptoms include headache and neck pain and drowsiness and nausea and fever (`phrenitis' is no longer in scientific use) [syn: encephalitis, cephalitis, phrenitis].
Cephalization (n.) Domination of the head in animal life as expressed in the physical structure; localization of important organs or parts in or near the head, in animal development. -- Dana.
Cephalo () A combining form denoting the head, of the head, connected with the head; as, cephalosome, cephalopod.
Cephalocercal (a.) (Zool.) Relating to the long axis of the body.
Cephaloid (a.) Shaped like the head. -- Craing.
Cephalology (n.) The science which treats of the head.
Cephalomere (n.) (Zool.) One of the somites (arthromeres) which make up the head of arthropods. -- Packard.
Cephalometer (n.) (Med.) An instrument measuring the dimensions of the head of a fetus during delivery.
Cephalon (n.) (Zool.) The head.
Cephalophora (n. pl.) (Zool.) The cephalata. Cephalopod
Cephalopod (n.) Alt. of Cephalopode.
Cephalopode (n.) (Zool.) One of the Cephalopoda.
Cephalopod (a.) Relating or belonging to the class Cephalopoda [syn: cephalopod, cephalopodan].
Cephalopod (n.) Marine mollusk characterized by well-developed head and eyes and sucker-bearing tentacles [syn: cephalopod, cephalopod mollusk].
Cephalopoda (n. pl.) (Zool.) The highest class of Mollusca.
Note: They have, around the front of the head, a group of elongated muscular arms, which are usually furnished with prehensile suckers or hooks. The head is highly developed, with large, well organized eyes and ears, and usually with a cartilaginous brain case. The higher forms, as the cuttlefishes, squids, and octopi, swim rapidly by ejecting a jet of water from the tubular siphon beneath the head. They have a pair of powerful horny jaws shaped like a parrot's beak, and a bag of inklike fluid which they can eject from the siphon, thus clouding the water in order to escape from their enemies. They are divided into two orders, the Dibranchiata, having two gills and eight or ten sucker-bearing arms, and the Tetrabranchiata, with four gills and numerous arms without suckers. The latter are all extinct except the Nautilus. See Octopus, Squid, Nautilus. Cephalopodic
Cephalopoda (n.) Octopuses; squids; cuttlefish; pearly nautilus [syn: Cephalopoda, class Cephalopoda].
Cephalopodic (a.) Alt. of Cephalopodous.
Cephalopodous (a.) Belonging to, or resembling, the cephalopods.
Cephaloptera (n.) (Zool.) One of the generic names of the gigantic ray ({Manta birostris), known as devilfish and sea devil. It is common on the coasts of South Carolina, Florida, and farther south. Some of them grow to enormous size, becoming twenty feet of more across the body, and weighing more than a ton.
Cephalosome (n.) (Zool.) The anterior region or head of insects and other arthropods. -- Packard.
Cephalosporin (n.) 頭孢菌素（法語：Cephalosporine、英語：Cephalosporin），又名先鋒黴素，是一系列屬於β內醯胺類的抗生素。與頭黴素一併細分為頭孢烯。
The cephalosporins are a class of β-lactam antibiotics originally derived from the fungus Acremonium, which was previously known as "Cephalosporium". [3]
Together with cephamycins, they constitute a subgroup of β-lactam antibiotics called cephems. Cephalosporins were discovered in 1945, and first sold in 1964. [4]
Cephalosporin (n.) 頭孢類藥物是一種殺菌藥 (Bactericidal)，正確名稱為Cephem類，抗菌機轉與青黴素類相同 (Have the same mode of action as other beta-lactam antibiotics)，它能與細菌細胞膜上的Penicillin-binding proteins (PBPs) 結合，阻止細菌細胞壁Mucopeptide的合成，導致滲透不穩定的細胞壁 (Disrupt the synthesis of the peptidoglycan layer of bacterial cell walls)。
Compare: Lactam
Lactam (n.) (Chem.) One of a series of anhydrides of an amido type, analogous to the lactones, as oxindol; a cyclic amide.
Compare: Beta-lactam
Beta-lactam or [beta]-lactam, (a) A lactam in which the amide bond is contained within a four-membered ring, which includes the amide nitrogen and the carbonyl carbon.
Beta-lactam or [beta]-lactam, (b) An antibiotic containing a beta-lactam, such as a penicillin, cephalosporin, or carbapenem; also called a beta-lactam antibiotic. [informal, laboratory slang].
Cephalosporin (n.) [from Cephalosporium, a fungus producing the first of the series discovered.] (Chem.) any of a class of chemical substances, some of which have therapeutically useful antibacterial activity, whose structure contains a beta-lactam ring fused to a six-membered ring containing a sulfur and a nitrogen atom. The first of the series, cephalosporin C, was discovered by G. Brotzu in 1955 in the culture broth of a Cephalosporium species found off the coast of Sardinia. Other cephalosporins have been found to be produced by species of soil bacteria (actinomycetes). Many semisynthetic analogs have been tested for antibacterial effect, and several of them have found use as important clinically useful antibacterial agents, some of which may be taken orally for treatment of bacterial infections. The cephalosporins are the second class of beta-lactam antibiotic to be discovered, the first being the penicillins and more recent classes being the thienamycins and sulfazecins. The cephamycins are a variant of cephalosporins with a methoxyl group on the beta-lactam ring, rendering them more resistant to penicillinases. Among the cephalosporins which have been found clinically useful are cephalexin, cephaloridine, and cephalothin.
Cephalosporin (n.) One of several broad spectrum antibiotic substances obtained from fungi and related to penicillin (trade names Mefoxin); addition of side chains has produced semisynthetic antibiotics with greater antibacterial activity [syn: cephalosporin, Mefoxin].
Cephalostyle (n.) (Anat.) The anterior end of the notochord and its bony sheath in the base of cartilaginous crania.
Cephalothorax (n.) (Zool.) The anterior portion of any one of the Arachnida and higher Crustacea, consisting of the united head and thorax.
Cephalotome (n.) (Med.) An instrument for cutting into the fetal head, to facilitate delivery.
Cephalotomy (n.) Dissection or opening of the head.
Cephalotomy (n.) (Med.) Craniotomy; -- usually applied to bisection of the fetal head with a saw.
Cephalotribe (n.) An obstetrical instrument for performing cephalotripsy.
Cephalotripsy (n.) (Med.) The act or operation of crushing the head of a fetus in the womb in order to effect delivery.
Cephalotrocha (n.) (Zool.) A kind of annelid larva with a circle of cilia around the head.
Cephalous (a.) (Zool.) Having a head; -- applied chiefly to the Cephalata, a division of mollusks.
Cepheus (n.) (Astron.) A northern constellation near the pole. Its head, which is in the Milky Way, is marked by a triangle formed by three stars of the fourth magnitude. See Cassiopeia.
Cepheus (n.) (Greek mythology) King of Ethiopia and husband of Cassiopeia.
Cepheus (n.) A faint constellation in the northern hemisphere near Cassiopeia and the pole star.
Ceraceous (a.) Having the texture and color of new wax; like wax; waxy.
Cerago (n.) Beebread.
Ceramic (a.) Of or pertaining to pottery; relating to the art of making earthenware; as, ceramic products; ceramic ornaments for ceilings.
Ceramics (n.) The art of making things of baked clay; as pottery, tiles, etc.
Ceramics (n.) pl. Work formed of clay in whole or in part, and baked; as, vases, urns, etc. -- Knight.
Cerargyrite (n.) (Min.) Native silver chloride, a mineral of a white to pale yellow or gray color, darkening on exposure to the light. It may be cut by a knife, like lead or horn (hence called horn silver).
Cerasin (n.) (Chem.) A white amorphous substance, the insoluble part of cherry gum; -- called also meta-arabinic acid.
Cerasin (n.) (Chem.) A gummy mucilaginous substance; -- called also bassorin, tragacanthin, etc.
Cerasinous (a.) Pertaining to, or containing, cerasin.
Cerasinous (a.) Of a cherry color.
Cerastes (n.) (Zool.) A genus of poisonous African serpents, with a horny scale over each eye; the horned viper.
Cerate (n.) (Med.) An unctuous preparation for external application, of a consistence intermediate between that of an ointment and a plaster, so that it can be spread upon cloth without the use of heat, but does not melt when applied to the skin.
Note: Cerate consists essentially of wax (for which resin or spermaceti is sometimes substituted) mixed with oil, lard, and various medicinal ingredients. The cerate (formerly called simple cerate) of the United States Pharmacopoeia is a mixture of three parts of white wax and seven parts of lard.
Cerated (p. a.) Covered with wax.
Ceratine (a.) (Lagic.) Sophistical.
Ceratobranchia (n. pl.) (Zool.) A group of nudibranchiate Mollusca having on the back papilliform or branched organs serving as gills.
Ceratobranchial (a.) (Anat.) Pertaining to the bone, or cartilage, below the epibranchial in a branchial arch.
Ceratobranchial (n.) A ceratobranchial bone, or cartilage.
Ceratodus (n.) (Zool.) A genus of ganoid fishes, of the order Dipnoi, first known as Mesozoic fossil fishes; but recently two living species have been discovered in Australian rivers. They have lungs so well developed that they can leave the water and breathe in air. In Australia they are called salmon and baramunda. See Dipnoi, and Archipterygium.
Ceratohyal (a.) (Anat.) Pertaining to the bone, or cartilage, below the epihyal in the hyoid arch.
Ceratohyal (n.) (Anat.) A ceratohyal bone, or cartilage, which, in man, forms one of the small horns of the hyoid.
Ceratosaurus (n.) (Paleon.) A swift-running bipedal carnivorous American Jurassic dinosaur allied to the European Megalosaurus. The animal was nearly twenty feet in length, and the skull bears a bony short horn between the nostrils on the united nasal bones. See Illustration in Appendix.
Ceratospongiae (n. pl.) (Zool.) An order of sponges in which the skeleton consists of horny fibers. It includes all the commercial sponges.
Ceraunics (n.) That branch of physics which treats of heat and electricity. -- R. Park.
Ceraunoscope (n.) An instrument or apparatus employed in the ancient mysteries to imitate thunder and lightning. -- T. Moore.
Cerberean (a.) Of or pertaining to, or resembling, Cerberus. [Written also Cerberian.]
With wide Cerberean mouth. -- Milton.
Cerber Ransomware (n.) 勒索病毒 The Cerber Ransomware is a ransomware infection that is used to encrypt the victims' files. The Cerber Ransomware adds the extension CERBER to every file that the Cerber Ransomware encrypts. After the Cerber Ransomware has encrypted some of the files of the victim, the Cerber Ransomware demands the payment of a ransom in exchange for the decryption key. According to Cerber Ransomware's ransom note, computer users have one week to pay the ransom amount before this amount is doubled.
Cerber Ransomware (n.) Cerber ransomware was discovered in March 2016. As a ransomware-as-a-service (RaaS), it can be deployed by non-technical attackers. Any money made from extorting ransomware victims is split between the attacker and the ransomware developer. Ransomware encrypts files with cryptographically-secure ciphers, forcing a victim to pay a ransom to get their files back unencrypted.
Cerberus (n.) (Class. Myth.) A monster, in the shape of a three-headed dog, guarding the entrance into the infernal regions, Hence: Any vigilant custodian or guardian, esp. if surly.
Cerberus (n.) (Zool.) A genus of East Indian serpents, allied to the pythons; the bokadam.
Cerberus (n.) (Greek mythology) The three-headed dog guarding the entrance to Hades; son of Typhon [syn: Cerberus, hellhound].
Cerberus (n.) The watch-dog of Hades, whose duty it was to guard the entrance -- against whom or what does not clearly appear; everybody, sooner or later, had to go there, and nobody wanted to carry off the entrance. Cerberus is known to have had three heads, and some of the poets have credited him with as many as a hundred. Professor Graybill, whose clerky erudition and profound knowledge of Greek give his opinion great weight, has averaged all the estimates, and makes the number twenty-seven -- a judgment that would be entirely conclusive is Professor Graybill had known (a) something about dogs, and (b) something about arithmetic.
Cercal (a.) (Zool.) Of or pertaining to the tail.
Cercarle (n. pl. ) of Cercaria.
Cercaria (n.) (Zool.) The larval form of a trematode worm having the shape of a tadpole, with its body terminated by a tail-like appendage.
Cercarian (a.) (Zool.) Of, like, or pertaining to, the Cercariae.
Cercarian (n.) (Zool.) One of the Cercariae.
Cercopod (n.) (Zool.) One of the jointed antenniform appendages of the posterior somites of certain insects. -- Packard.
Cerci (n. pl. ) of Cercus.
Cercus (n.) (Zool.) See Cercopod.
Cere (n.) (Zool.) The soft naked sheath at the base of the beak of birds of prey, parrots, and some other birds. See Beak.
Cered (imp. & p. p.) of Cere.
Cering (p. pr. & vb. n.) of Cere.
Cere (v. t.) To wax; to cover or close with wax. -- Wiseman.
Cere (n.) The fleshy, waxy covering at the base of the upper beak of some birds.
Cere (v.) Wrap up in a cerecloth; "cere a corpse".
Cereal (a.) Of or pertaining to the grasses which are cultivated for their edible seeds (as wheat, maize, rice, etc.), or to their seeds or grain.
Cereal (n.) Any grass cultivated for its edible grain, or the grain itself; -- usually in the plural.
Cereal (a.) Made of grain or relating to grain or the plants that produce it; "a cereal beverage"; "cereal grasses".
Cereal (n.) Grass whose starchy grains are used as food: wheat; rice; rye; oats; maize; buckwheat; millet [syn: cereal, cereal grass].
Cereal (n.) Foodstuff prepared from the starchy grains of cereal grasses [syn: grain, food grain, cereal].
Cereal (n.) A breakfast food prepared from grain.
Cerealia (n. pl.) (Antiq.) Public festivals in honor of Ceres.
Cerealia (n. pl.) The cereals. -- Crabb.
Cerealin (n.) (Chem.) A nitrogenous substance closely resembling diastase, obtained from bran, and possessing the power of converting starch into dextrin, sugar, and lactic acid. -- Watts.
Cerebel (n.) The cerebellum. -- Derham. Cerebellar
Cerebellar (a.) Alt. of Cerebellous.
Cerebellous (a.) (Anat.) Of or pertaining to the cerebellum; as, the cerebellar artery.
Cerebellar (a.) Relating to or associated with the cerebellum; "cerebellar artery".
Cerebellums (n. pl. ) of Cerebellum.
Cerebella (n. pl. ) of Cerebellum.
Cerebellum (n.) (Anat.) The large lobe of the hind brain in front of and above the medulla; the little brain. It controls combined muscular action. See Brain.
Cerebellum (n.) A major division of the vertebrate brain; situated above the medulla oblongata and beneath the cerebrum in humans.
Cerebral (a.) (Anat.) 大腦的；理智的；有智力的；用腦筋的 Of or pertaining to the cerebrum.
Cerebral apoplexy. See under Apoplexy.
Cerebral (n.) One of a class of lingual consonants in the East Indian languages. See {Lingual}, n.
Note: Prof. W. D. Whitney calls these letters linguals, and this is their usual designation in the United States.
Cerebral (a.) Involving intelligence rather than emotions or instinct; "a cerebral approach to the problem"; "cerebral drama" [syn: cerebral, intellectual] [ant: emotional].
Cerebral (a.) Of or relating to the cerebrum or brain ; "cerebral hemisphere"; "cerebral activity".
Cerebral (a.) 腦的，大腦的 (Specialized) (Medical) Relating to the brain or the cerebrum.
Cerebral (a.) (Formal) 理智的；理性的 Demanding or involving careful thinking and mental effort rather than feelings.
// She makes cerebral films that deal with important social issues.
Cerebral cortex (n.) 大腦皮質 The layer of unmyelinated neurons (the grey matter) forming the cortex of the cerebrum [syn: cerebral cortex, cerebral mantle, pallium, cortex].
Cerebral Cortex (n.) Your cerebral cortex, also called gray matter, is your brain’s outermost layer of nerve cell tissue. It has a wrinkled appearance from its many folds and grooves. Your cerebral cortex plays a key role in memory, thinking, learning, reasoning, problem-solving, emotions, consciousness and functions related to your senses.
Cerebralism (n.) (Philos.) The doctrine or theory that psychical phenomena are functions or products of the brain only.
Cerebralist (n.) One who accepts cerebralism.
Cerebrate (v. i.) (Physiol.) 思考 To exhibit mental activity; to have the brain in action.
Cerebrate (v.) Use or exercise the mind or one's power of reason in order to make inferences, decisions, or arrive at a solution or judgments; "I've been thinking all day and getting nowhere" [syn: think, cogitate, cerebrate].
Cerebration (n.) Action of the brain, whether conscious or unconscious.
Cerebration (n.) The process of using your mind to consider something carefully; "thinking always made him frown"; "she paused for thought" [syn: thinking, thought, thought process, cerebration, intellection, mentation].
Cerebric (a.) Of, pertaining to, or derived from, the brain.
Cerebric acid (Physiol. Chem.), A name formerly sometimes given to cerebrin.
Cerebricity (n.) Brain power. [R.]
Cerebriform (a.) Like the brain in form or substance.
Cerebrifugal (a.) (Physiol.) Applied to those nerve fibers which go from the brain to the spinal cord, and so transfer cerebral impulses (centrifugal impressions) outwards.
Cerebrin (n.) (Physiol. Chem.) 腦素 A nonphosphorized, nitrogenous substance, obtained from brain and nerve tissue by extraction with boiling alcohol. It is uncertain whether it exists as such in nerve tissue, or is a product of the decomposition of some more complex substance.
Cerebripetal (a.) (Physiol.) Applied to those nerve fibers which go from the spinal cord to the brain and so transfer sensations (centripetal impressions) from the exterior inwards.