Webster's Unabridged Dictionary - Letter R - Page 63
Rhipidoglossa (n. pl.) (Zool.) A division of gastropod mollusks having a large number of long, divergent, hooklike, lingual teeth in each transverse row. It includes the scutibranchs. See Illustration in Appendix.
Rhipipter (n.) (Zool) One of the Rhipiptera, a group of insects having wings which fold like a fan; a strepsipter.
Rhipipteran (n.) (Zool.) Same as Rhipipter.
Rhizanthous (a.) (Bot.) Producing flowers from a rootstock, or apparently from a root.
Rhizine (n.) (Bot.) A rootlike filament or hair growing from the stems of mosses or on lichens; a rhizoid.
Rhizocarpous (a.) (Bot.) Having perennial rootstocks or bulbs, but annual flowering stems; -- said of all perennial herbs.
Rhizocephala (n. pl.) (Zool.) A division of Pectostraca including saclike parasites of Crustacea. They adhere by rootlike extensions of the head. See Illusration in Appendix.
Rhizodont (n.) (Zool.) A reptile whose teeth are rooted in sockets, as the crocodile.
Rhizogan (a.) (Bot.) Prodicing roots.
Rhizogen (n.) (Bot.) One of a proposed class of flowering plants growning on the roots of other plants and destitute of green foliage.
Rhizoid (n.) (Bot.) A rootlike appendage.
Rhizomata (n. pl. ) of Rhizoma.
Rhizoma (n.) [NL.] (Bot.) Same as Rhizome.
Rhizomatous (a.) (Bot.) Having the nature or habit of a rhizome or rootstock.
Rhizomatous (a.) Producing or possessing or resembling rhizomes.
Rhizome (n.) (Bot.) A rootstock, such as one of an iris. See Rootstock.
Rhizome (n.) A horizontal plant stem with shoots above and roots below serving as a reproductive structure [syn: rhizome, rootstock, rootstalk].
Rhizophaga (n. pl.) [NL.] (Zool.) A division of marsupials. The wombat is the type.
Rhizophagous (a.) Feeding on roots; root-eating.
Rhizophora (n.) (Bot.) A genus of trees including the mangrove. See Mangrove.
Rhizophorous (a.) (Bot.) Bearing roots.
Rhizopod (n.) (Zool.) One of the Rhizopoda.
Note: The rhizopods belonging to the Radiolaria and Foraminifera have been of great geological importance, especially in the Cretaceous and Tertiary periods. Chalk is mostly made from the shells of Foraminifera. The nummulites are the principal ingredient of a limestone which is of great extent in Europe and Asia, and is the material of which some of the pyramids of Egypt are made. The shells are abundant in deepsea mud, and are mostly minute, seldom larger than a small grain of sand, except in the case of the nummulities, which are sometimes an inch in diameter.
Rhizopod (n.) Protozoa characterized by a pseudopod [syn: rhizopod, rhizopodan].
Rhizopoda (n. pl.) (Zool.) An extensive class of Protozoa, including those which have pseudopodia, by means of which they move about and take their food. The principal groups are Lobosa (or Am[oe]bea), Helizoa, Radiolaria, and Foraminifera (or Reticularia). See Protozoa.
Molluscoidea, including Brachiopoda and Bryozoa. Mollusca, including Cephalopoda, Gastropoda, Pteropoda, Scaphopoda, Lamellibranchiata or Acephala. Echinodermata, including Holothurioidea, Echinoidea, Asterioidea, Ophiuroidea, and Crinoidea. C[oe]lenterata, including Anthozoa or Polyps, Ctenophora, and Hydrozoa or Acalephs. Spongiozoa or Porifera, including the sponges.
Protozoa,
including Infusoria and Rhizopoda. For definitions, see these names in
the Vocabulary. Animalcular
Rhizopoda (n.) Creeping protozoans: amoebas and
foraminifers [syn: Rhizopoda, subclass Rhizopoda].
Rhizopodous (a.) (Zool.) Of or pertaining to the rhizopods.
Rhizostomata (n. pl.) (Zool.) A suborder of Medusae which includes very large species without marginal tentacles, but having large mouth lobes closely united at the edges. See Illust. in Appendix.
Rhizostome (n.) (Zool.) One of the Rhizostomata.
Rhizotaxis (n.) (Bot.) The arrangement of the roots of plants.
Rob (n.) The inspissated juice of ripe fruit, obtained by evaporation of the juice over a fire till it acquires the consistence of a sirup. It is sometimes mixed with honey or sugar. [Written also rhob, and rohob.]
Rhob (n.) See 1st Rob.
Rhodammonium (a.) (Chem.) Pertaining to, derived from, or containing, rhodium and ammonia; -- said of certain complex compounds.
Rhodanate (n.) (Chem.) A salt of rhodanic acid; a sulphocyanate. [Obsoles.]
Rhodanic (a.) (Chem.) Pertaining to, or designating, an acid (commonly called sulphocyanic acid) which frms a red color with ferric salts. [Obsoles.]
Rhodeoretin (n.) (Chem.) Same as Convolvuln.
Rhodian (a.) Of or pertaining to Rhodes, an island of the Mediterranean.
Rhodian (n.) A native or inhabitant of Rhodes.
Rhodic (a.) (Chem.) Of or pertaining to rhodium; containing rhodium.
Rhodium (n.) (Chem.) A rare element of the light platinum group. It is found in platinum ores, and obtained free as a white inert metal which it is very difficult to fuse. Symbol Rh. Atomic weight 104.1. Specific gravity 12.
Rhodizonic (a.) Pertaining to, or designating, a colorless crystalline substance (called rhodizonic acid, and carboxylic acid) obtained from potassium carboxide and from certain quinones. It forms brilliant red, yellow, and purple salts.
Rhodochrosite (n.) (Min.) Manganese carbonate, a rose-red mineral sometimes occuring crystallized, but generally massive with rhombohedral cleavage like calcite; -- called also dialogite.
Rhodochrosite (n.) A mineral consisting of manganese carbonate; a source of manganese.
Rhodocrinite (n.) (Paleon.) A rose encrinite.
Rhododendron (n.) (Bot.) A genus of shrubs or small trees, often having handsome evergreen leaves, and remarkable for the beauty of their flowers; rosebay.
Rhododendron (n.) Any shrub of the genus Rhododendron: evergreen shrubs or small shrubby trees having leathery leaves and showy clusters of campanulate (bell-shaped) flowers.
Rhodomontade (n.) See Rodomontade.
Rhodomontader (n.) See Rodomontador.
Rhodonite (n.) (Min.) Manganese spar, or silicate of manganese, a mineral occuring crystallised and in rose-red masses. It is often used as an ornamental stone.
Rhodonite (n.) A pink or red mineral consisting of crystalline manganese silicate; used as an ornamental stone.
Rhodophane (n.) (Physiol.) The red pigment contained in the inner segments of the cones of the retina in animals. See Chromophane. -- W. K["u]hne.
Rhodopsin (n.) (Physiol.) The visual purple. See under Visual.
Rhodosperm (n.) (Bot.) Any seaweed with red spores.
Rhomb (n.) (Geom.) 【數】菱形；斜方形；（結晶）菱形晶體 An equilateral parallelogram, or quadrilateral figure whose sides are equal and the opposite sides parallel. The angles may be unequal, two being obtuse and two acute, as in the cut, or the angles may be equal, in which case it is usually called a square.
Rhomb (n.) (Geom.) A rhombohedron.
Fresnel's rhomb (Opt.), A rhomb or oblique parallelopiped of crown or St. Gobain glass so cut that a ray of light entering one of its faces at right angles shall emerge at right angles at the opposite face, after undergoing within the rhomb, at other faces, two reflections. It is used to produce a ray circularly polarized from a plane-polarized ray, or the reverse. -- Nichol.
Rhomb (n.) A parallelogram with four equal sides; an oblique-angled equilateral parallelogram [syn: rhombus, rhomb, diamond].
Rhombic (a.) 菱形的 Shaped like a rhomb.
Rhombic (a.) (Crystallog.) Same as Orthorhombic.
Rhombic (a.) Resembling a rhombus.
Rhomboganoid (n.) (Zool.) A ganoid
fish having rhombic enameled scales; one of the Rhomboganoidei.
Rhomboganoidei (n. pl.) [NL.] (Zool.) Same as Ginglymodi.
Rhombogene (n.) (Zool.) A dicyemid which produces infusorialike embryos; -- opposed to nematogene. See Dicyemata. [Written also rhombogen.]
Rhombohedral (a.) (Geom. & Crystallog.) Related to the rhombohedron; presenting the form of a rhombohedron, or a form derivable from a rhombohedron; relating to a system of forms including the rhombohedron and scalenohedron.
Rhombohedral iron ore (Min.) See Hematite.
Rhombohedral system (Crystallog.), A division of the hexagonal system embracing the rhombohedron, scalenohedron, etc.
Rhombohedral (a.) Having threefold symmetry [syn: rhombohedral, trigonal].
Rhombohedric (a.) (Geom. & Crystallog.) Rhombohedral.
Rhombohedron (n.) (Geom. & Crystallog.) A solid contained by six rhomboids; a parallelopiped.
Rhombohedron (n.) A parallelepiped bounded by six similar faces (either rhombuses or parallelograms).
Rhomboid (n.) (Geom.) An oblique-angled parallelogram like a rhomb, but having only the opposite sides equal, the length and with being different.
Rhomboid (a.) Same as Rhomboidal.
Rhomboidal (a.) Having, or approaching, the shape of a rhomboid.
Rhomboidal (a.) Shaped like a rhombus or rhomboid; "rhomboidal shapes" [syn: rhomboid, rhomboidal].
Rhomboides (n.) A rhomboid. [R.] -- Milton.
Rhomboid-ovate (a.) Between rhomboid and ovate, or oval, in shape.
Rhomb spar () (Min.) A variety of dolomite.
Rhombus (n.) [L.] Same as Rhomb, 1.
Rhonchal (a.) (Med.) Rhonchial.
Rhonchial (a.) (Med.) Of or pertaining to a rhonchus; produced by rhonchi.
Rhonchial fremitus. (Med.) A vibration of the chest wall that may be felt by the hand laid upon its surface. It is caused in the production of rhonchi in the bronchial tubes.
Rhonchisonant (a.) Making a snorting noise; snorting. [R.]
Rhonchi (n. pl. ) of Rhonchus.
Rhonchus (n.) (Med.) An adventitious whistling or snoring sound heard on auscultation of the chest when the air channels are partially obstructed. By some writers the term rhonchus is used as equivalent to rale in its widest sense. See Rale.
Rhopalic (a.) (Pros.) Applied to a line or verse in which each successive word has one more syllable than the preceding.
Rhopalia (n. pl. ) of Rhopalium.
Rhopalium (n.) [NL.] (Zool.) One of the marginal sensory bodies of medusae belonging to the Discophora.
Rhopalocera (n. pl.) (Zool.) A division of Lepidoptera including all the butterflies. They differ from other Lepidoptera in having club-shaped antennae.
Rhotacism (n.) An oversounding, or a misuse, of the letter r; specifically (Phylol.), the tendency, exhibited in the Indo-European languages, to change s to r, as wese to were.
Rhubarb (n.) (Bot.) The name of several large perennial herbs of the genus Rheum and order Polygonaceae.
Rhubarb (n.) The large and fleshy leafstalks of Rheum Rhaponticum and other species of the same genus. They are pleasantly acid, and are used in cookery. Called also pieplant.
Rhubarb (n.) (Med.) The root of several species of Rheum, used much as a cathartic medicine.
Monk's rhubarb. (Bot.) See under Monk.
Turkey rhubarb (Med.), The roots of Rheum Emodi.
Rhubarb (n.) Long pinkish sour leafstalks usually eaten cooked and sweetened [syn: pieplant, rhubarb].
Rhubarb (n.) Plants having long green or reddish acidic leafstalks growing in basal clumps; stems (and only the stems) are edible when cooked; leaves are poisonous [syn: rhubarb, rhubarb plant].
Rhubarby (a.) Like rhubarb.
Rhumb (n.) A line which crosses successive meridians at a constant angle; -- called also rhumb line, and loxodromic curve. See Loxodromic.
To sail on a rhumb, To sail continuously on one course, following a rhumb line.
Rhumb (n.) A line on a sphere that cuts all meridians at the same angle; the path taken by a ship or plane that maintains a constant compass direction [syn: rhumb line, rhumb, loxodrome].
Rhus (n.) (Bot.) A genus of shrubs and small treets. See Sumac.
Rhusma (n.) [See Rusma.] A mixtire of caustic lime and orpiment, or tersulphide of arsenic, -- used in the depilation of hides. -- Knight.
Rhyme (n.) An expression of thought in numbers, measure, or verse; a composition in verse; a rhymed tale; poetry; harmony of language. "Railing rhymes." -- Daniel.
A ryme I learned long ago. -- Chaucer.
He knew Himself to sing, and build the lofty rime. -- Milton.
Rhyme (n.) (Pros.) Correspondence of sound in the terminating words or syllables of two or more verses, one succeeding another immediately or at no great distance. The words or syllables so used must not begin with the same consonant, or if one begins with a vowel the other must begin with a consonant. The vowel sounds and accents must be the same, as also the sounds of the final consonants if there be any.
For rhyme with reason may dispense, And sound has right to govern sense. -- Prior.
Rhyme (n.) Verses, usually two, having this correspondence with each other; a couplet; a poem containing rhymes.
Rhyme (n.) A word answering in sound to another word.
Female rhyme. See under Female.
Male rhyme. See under Male.
Rhyme or reason, Sound or sense.
Rhyme royal (Pros.), A stanza of seven decasyllabic verses, of which the first and third, the second, fourth, and fifth, and the sixth and seventh rhyme.
Rhymed (imp. & p. p.) of Rhyme.
Rhyming (p. pr. & vb. n.) of Rhyme.
Rhyme (v. i.) To make rhymes, or verses. "Thou shalt no longer ryme." -- Chaucer.
There marched the bard and blockhead, side by side, Who rhymed for hire, and patronized for pride. -- Pope.
Rhyme (v. i.) To accord in rhyme or sound.
And, if they rhymed and rattled, all was well. -- Dryden.
Rhyme (v. t.) To put into rhyme. -- Sir T. Wilson.
Rhyme (v. t.) To influence by rhyme. Hearken to a verser, who may chance Rhyme thee to good. -- Herbert.
Rhyme (n.) Correspondence in the sounds of two or more lines (especially final sounds) [syn: rhyme, rime].
Rhyme (n.) A piece of poetry [syn: verse, rhyme].
Rhyme (v.) Compose rhymes [syn: rhyme, rime].
Rhyme (v.) Be similar in sound, especially with respect to the last syllable; "hat and cat rhyme" [syn: rhyme, rime].
Rhymeless (a.) Destitute of rhyme. -- Bp. Hall.
Rhymer (n.) One who makes rhymes; a versifier; -- generally in contempt; a poor poet; a poetaster.
This would make them soon perceive what despicaple creatures our common rhymers and playwriters be. -- Milton.
Rhymer (n.) A writer who composes rhymes; a maker of poor verses (usually used as terms of contempt for minor or inferior poets) [syn: rhymer, rhymester, versifier, poetizer, poetiser].
Rhymery (n.) The art or habit of making rhymes; rhyming; -- in contempt.
Rhymester (n.) A rhymer; a maker of poor poetry. -- Bp. Hall. Byron.
Rhymic (a.) Pertaining to rhyme.
Rhymist (n.) A rhymer; a rhymester. -- Johnston.
Rhynchobdellea (n. pl.) (Zool.) A suborder of leeches including those that have a protractile proboscis, without jaws. Clepsine is the type.
Rhynchocephala (n. pl.) (Zool.) An order of reptiles having biconcave vertebrae, immovable quadrate bones, and many other peculiar osteological characters. Hatteria is the only living genus, but numerous fossil genera are known, some of which are among the earliest of reptiles. See Hatteria. Called also Rhynchocephalia.
Rhynchocoela (n. pl.) (Zool.) Same as Nemertina. -- Rhyn`cho*coe"lous, a.
Rhyncholite (n.) (Paleon.) A fossil cephalopod beak.
Rhynchonella (n.) (Zool.) A genus of brachiopods of which some species are still living, while many are found fossil.
Rhynchophora (n. pl.) (Zool.) A group of Coleoptera having a snoutlike head; the snout beetles, curculios, or weevils.