Webster's Unabridged Dictionary - Letter O - Page 19
Opisthomi (n. pl.) (Zool.) An order of eellike fishes having the scapular arch attached to the vertebrae, but not connected with the skull.
Opisthopulmonate (a.) (Zool.) Having the pulmonary sac situated posteriorly; -- said of certain air-breathing Mollusca.
Compare: Mollusca
Mollusca (prop. n. pl.) (Zool.) 軟體動物門 One of the grand divisions of the animal kingdom, a phylum including the classes Cephalopoda, Gastropoda, Pteropoda, Scaphopoda, and Pelecyopoda (syn. Bivalvia, formerly called Lamellibranchiata, or Conchifera). These animals have an unsegmented bilateral body, with most of the organs and parts paired, but not repeated longitudinally. Most of them develop a mantle, which incloses either a branchial or a pulmonary cavity. They are generally more or less covered and protected by a calcareous shell, which may be univalve, bivalve, or multivalve.
Note: Formerly the Brachiopoda, Bryzoa, and Tunicata were united with the Lamellibranchiata in an artificial group called Acephala, which was also included under Mollusca. See Molluscoidea.
Mollusca (n.) Gastropods; bivalves; cephalopods; chitons [syn: Mollusca, phylum Mollusca].
Opisthotic (n.) The inferior and posterior of the three elements forming the periotic bone.
Opisthotonos (n.) A tetanic spasm in which the body is bent backwards and stiffened.
Opitulation (n.) The act of helping or aiding; help.
Opium (n.) The inspissated juice of the Papaver somniferum, or white poppy.
Opium (n.) [ U ] 鴉片 A drug made from the seeds of a poppy (= red flower) that is used to control pain or to help people sleep. It can make a person who takes it want more of it and is sometimes used by people as an illegal drug for pleasure.
// An opium addict.
Compare: Addict
Addict (n.) 入迷的人；有癮的人 [C] A person who is addicted to a particular substance, typically an illegal drug.
‘A former heroin addict.’
Addict (n.) [Informal] [With modifier] An enthusiastic devotee of a specified thing or activity.
‘A self-confessed chocolate addict.’
‘A must-buy book for the crossword-puzzle addict.’
Addict (n.) A person who is addicted to an activity, habit, or substance.
// A drug addict.
Addict (v. t.) 使沉溺，使醉心；使成癮 [H] [（+to）] To cause to become physiologically or psychologically dependent on an addictive substance, as alcohol or a narcotic.
Addict (v. t.) To habituate or abandon (oneself) to something compulsively or obsessively:a writer addicted to the use of high-flown language; children addicted to video games.
Ople tree () The witch-hazel.
Opobalsam (n.) Alt. of Opobalsamum.
Opobalsamum (n.) The old name of the aromatic resinous juice of the Balsamodendron opobalsamum, now commonly called balm of Gilead. See under Balm.
Opodeldoc (n.) A kind of plaster, said to have been invented by Mindererus, -- used for external injuries.
Opodeldoc (n.) A saponaceous, camphorated liniment; a solution of soap in alcohol, with the addition of camphor and essential oils; soap liniment.
Opopanax (n.) The inspissated juice of an umbelliferous plant (the Opoponax Chironum), brought from Turkey and the East Indies in loose granules, or sometimes in larger masses, of a reddish yellow color, with specks of white. It has a strong smell and acrid taste, and was formerly used in medicine as an emmenagogue and antispasmodic.
Opossum (n.) (Zool.) 【動】負鼠 Any American marsupial of the genera Didelphys and Chironectes; called also possum. The common species of the United States is Didelphys Virginiana.
Note: Several related species are found in South America. The water opossum of Brazil ({Chironectes variegatus), which has the hind feet, webbed, is provided with a marsupial pouch and with cheek pouches. It is called also yapock.
Opossum mouse. (Zool.) See Flying mouse, under Flying.
Opossum shrimp (Zool.), Any schizopod crustacean of the genus Mysis and allied genera. See Schizopoda.
Opossum (n.) Small furry Australian arboreal marsupials having long usually prehensile tails [syn: phalanger, opossum, possum].
Opossum (n.) Nocturnal arboreal marsupial having a naked prehensile tail found from southern North America to northern South America [syn: opossum, possum].
Oppidan (a.) Of or pertaining to a town.
Oppidan (n.) An inhabitant of a town.
Oppidan (n.) A student of Eton College , England, who is not a King's scholar, and who boards in a private family.
Oppignerate (v. i.) To pledge; to pawn.
Oppilated (imp. & p. p.) of Oppilate.
Oppilating (p. pr. & vb. n.) of Oppilate.
Oppilate (v. t.) To crowd together; to fill with obstructions; to block up.
Oppilation (n.) The act of filling or crowding together; a stopping by redundant matter; obstruction, particularly in the lower intestines.
Oppilative (a.) Obstructive.
Opplete (a.) Alt. of Oppleted.
Oppleted (a.) Filled; crowded.
Oppletion (n.) The act of filling up, or the state of being filled up; fullness.
Oppone (v. t.) To oppose.
Opponency (n.) The act of opening an academical disputation; the proposition of objections to a tenet, as an exercise for a degree.
Opponent (a.) 對立的，對抗的；敵對的，反對的 Situated in front; opposite; hence, opposing; adverse; antagonistic.
Opponent (n.) 對手；敵手，反對者 [C]；【解】對向肌 [C] One who opposes; an adversary; an antagonist; a foe.
Opponent (n.) One who opposes in a disputation, argument, or other verbal controversy; specifically, one who attacks some theirs or proposition, in distinction from the respondent, or defendant, who maintains it.
Opportune (a.) （時間等）恰好的，適宜的；（行為、事情等）及時的，適時的 Convenient; ready; hence, seasonable; timely. -- Milton.
This is most opportune to our need. -- Shak. -- {Op`por*tune"ly}, adv. -- {Op`por*tune"ness}, n.
Opportune (v. t.) To suit. [Obs.] -- Dr. Clerke (1637).
Opportunely (adv.) (comparative more opportunely, superlative most opportunely) 恰好地，及時地，適時地 In a manner suitable for some particular purpose.
Opportunely (adv.) In a manner convenient or advantageous at some particular time.
Opportuneness (n.) (Uncountable) 適時；恰當 The state or condition of being opportune.
Opportunism (n.) 機會主義；投機主義 The art or practice of taking advantage of opportunities or circumstances, or of seeking immediate advantage with little regard for ultimate consequences.
Opportunism (n.) (Countable and uncountable, pl. Opportunisms) The practice of taking advantage of any situations or people to achieve an end, often with no regard for principles or consequences.
Opportunist (n.) 機會主義者；投機取巧者 One who advocates or practices opportunism.
Opportunities (n. pl. ) of Opportunity.
Opportunity (n.) [C] [U] [（+of/ for）] [+to-v] 機會；良機 Fit or convenient time; a time or place favorable for executing a purpose; a suitable combination of conditions; suitable occasion; chance.
Opportunity (n.) Convenience of situation; fitness.
Opportunity (n.) Importunity; earnestness.
Opportunity (n.) A possibility due to a favorable combination of circumstances; "the holiday gave us the opportunity to visit Washington"; "now is your chance" [syn: {opportunity}, {chance}].
Opposability (n.) The condition or quality of being opposable.
Opposable (a.) Capable of being opposed or resisted.
Opposable (a.) Capable of being placed opposite something else; as, the thumb is opposable to the forefinger.
Opposal (n.) Opposition.
Opposed (imp. & p. p.) of Oppose.
Opposing (p. pr. & vb. n.) of Oppose.
Oppose (n.) To place in front of, or over against; to set opposite; to exhibit.
Oppose (n.) To put in opposition, with a view to counterbalance or countervail; to set against; to offer antagonistically.
Oppose (n.) To resist or antagonize by physical means, or by arguments, etc.; to contend against; to confront; to resist; to withstand; as, to oppose the king in battle; to oppose a bill in Congress.
Oppose (n.) To compete with; to strive against; as, to oppose a rival for a prize.
Oppose (v. i.) To be set opposite.
Oppose (v. i.) To act adversely or in opposition; -- with against or to; as, a servant opposed against the act.
Oppose (v. i.) To make objection or opposition in controversy.
Opposeless (a.) Not to be effectually opposed; irresistible.
Opposer (n.) One who opposes; an opponent; an antagonist; an adversary.
Opposite (a.) Placed over against; standing or situated over against or in front; facing; -- often with to; as, a house opposite to the Exchange.
Opposite (a.) Applied to the other of two things which are entirely different; other; as, the opposite sex; the opposite extreme.
Opposite (a.) Extremely different; inconsistent; contrary; repugnant; antagonistic.
Opposite (a.) Set over against each other, but separated by the whole diameter of the stem, as two leaves at the same node.
Opposite (a.) Placed directly in front of another part or organ, as a stamen which stands before a petal.
Opposite (n.) One who opposes; an opponent; an antagonist.
Opposite (n.) That which is opposed or contrary; as, sweetness and its opposite.
Oppositely (adv.) In a situation to face each other; in an opposite manner or direction; adversely.
Oppositeness (n.) The quality or state of being opposite.
Oppositifolious (a.) Placed at the same node with a leaf, but separated from it by the whole diameter of the stem; as, an oppositifolious peduncle.
Opposition (n.) [U] 反對；反抗；對抗 [（+to）]；敵對；對立；意見相反 [（+to）]；（常大寫）反對黨 [the S] [G] The act of opposing; an attempt to check, restrain, or defeat; resistance.
The counterpoise of so great an opposition. -- Shak.
Virtue which breaks through all opposition. -- Milton.
Opposition (n.) The state of being placed over against; situation so as to front something else. -- Milton.
Opposition (n.) Repugnance; contrariety of sentiment, interest, or purpose; antipathy. -- Shak.
Opposition (n.) That which opposes; an obstacle; specifically, the aggregate of persons or things opposing; hence, in politics and parliamentary practice, the party opposed to the party in power.
Opposition (n.) (Astron.) The situation of a heavenly body with respect to another when in the part of the heavens directly opposite to it; especially, the position of a planet or satellite when its longitude differs from that of the sun 180 [deg]; -- signified by the symbol ?; as, ? [Jupiter] [Sun], opposition of Jupiter to the sun.
Opposition (n.) (Logic) The relation between two propositions when, having the same subject and predicate, they differ in quantity, or in quality, or in both; or between two propositions which have the same matter but a different form.
Opposition (n.) The action of opposing something that you disapprove or disagree with; "he encountered a general feeling of resistance from many citizens"; "despite opposition from the newspapers he went ahead" [syn: resistance, opposition].
Opposition (n.) The relation between opposed entities [syn: opposition, oppositeness].
Opposition (n.) The act of hostile groups opposing each other; "the government was not ready for a confrontation with the unions"; "the invaders encountered stiff opposition" [syn: confrontation, opposition].
Opposition (n.) A contestant that you are matched against [syn: opposition, opponent, opposite].
Opposition (n.) A body of people united in opposing something.
Opposition (n.) A direction opposite to another.
Opposition (n.) An armed adversary (especially a member of an opposing military force); "a soldier must be prepared to kill his enemies" [syn: enemy, foe, foeman, opposition].
Opposition (n.) The major political party opposed to the party in office and prepared to replace it if elected; "Her Majesty's loyal opposition".
Opposition (n.) Practice. The act of a creditor who, declares his dissent to a debtor's being discharged under the insolvent laws.
Opposition (n.) In politics the party that prevents the Government from running amuck by hamstringing it.
The King of Ghargaroo, who had been abroad to study the science of government, appointed one hundred of his fattest subjects as members of a parliament to make laws for the collection of revenue. Forty of these he named the Party of Opposition and had his Prime Minister carefully instruct them in their duty of opposing every royal measure.
Nevertheless, the first one that was submitted passed unanimously.
Greatly displeased, the King vetoed it, informing the Opposition that if they did that again they would pay for their obstinacy with their heads. The entire forty promptly disemboweled themselves.
"What shall we do now?" the King asked. "Liberal institutions cannot be maintained without a party of Opposition."
"Splendor of the universe," replied the Prime Minister, "it is true these dogs of darkness have no longer their credentials, but all is not lost. Leave the matter to this worm of the dust."
So the Minister had the bodies of his Majesty's Opposition embalmed and stuffed with straw, put back into the seats of power and nailed there. Forty votes were recorded against every bill and the nation prospered. But one day a bill imposing a tax on warts was defeated -- the members of the Government party had not been nailed to their seats! This so enraged the King that the Prime Minister was put to death, the parliament was dissolved with a battery of artillery, and government of the people, by the people, for the people perished from Ghargaroo.
Oppositionist (n.) One who belongs to the opposition party. -- Praed.
Oppositipetalous (a.) (Bot.) Placed in front of a petal.
Oppositisepalous (a.) (Bot.) Placed in front of a sepal.
Oppositive (a.) 反對的；相反的 Capable of being put in opposition. -- Bp. Hall.
Oppositive (a.) Expressing antithesis or opposition; "the adversative conjunction `but' in `poor but happy'" [syn: adversative, oppositive].
Oppressed (imp. & p. p.) of Oppress.
Oppressing (p. pr. & vb. n.) of Oppress.
Oppress (v. t.) 壓迫；壓制；使（心情）沉重；使煩惱，折磨 [H] [（+by/ with）] To impose excessive burdens upon; to overload; hence, to treat with unjust rigor or with cruelty. -- Wyclif.
For thee, oppress[`e]d king, am I cast down. -- Shak.
Behold the kings of the earth; how they oppress Thy chosen! -- Milton.
Oppress (v. t.) To ravish; to violate. [Obs.] -- Chaucer.
Oppress (v. t.) To put down; to crush out; to suppress. [Obs.]
The mutiny he there hastes to oppress. -- Shak.
Oppress (v. t.) To produce a sensation of weight in (some part of the body); as, my lungs are oppressed by the damp air; excess of food oppresses the stomach.
Oppress (v.) Come down on or keep down by unjust use of one's authority; "The government oppresses political activists" [syn: oppress, suppress, crush].
Oppress (v.) Cause to suffer; "Jews were persecuted in the former Soviet Union" [syn: persecute, oppress].
Oppression (n.) 壓迫，壓制 [U] [C]；壓抑；沉悶 [U] The act of oppressing, or state of being oppressed.
Oppression (n.) That which oppresses; a hardship or injustice; cruelty; severity; tyranny.
Oppression (n.) A sense of heaviness or obstruction in the body or mind; depression; dullness; lassitude; as, an oppression of spirits; an oppression of the lungs.
Oppression (n.) Ravishment; rape.
Oppressive (a.) 壓迫的，壓制的；不公正的；苛重的；專制的，暴虐的 Unreasonably burdensome; unjustly severe, rigorous, or harsh; as, oppressive taxes; oppressive exactions of service; an oppressive game law.
Oppressive (a.) Using oppression; tyrannical; as, oppressive authority or commands.
Oppressive (a.) Heavy; overpowering; hard to be borne; as, oppressive grief or woe.
Oppressor (n.) 壓迫者；壓制者 One who oppresses; one who imposes unjust burdens on others; one who harasses others with unjust laws or unreasonable severity.
Oppressure (n.) (Obsolete) Oppression.
Opprobrious (a.) 無禮的；粗野的；罵人的；該罵的；可恥的 Expressive of opprobrium; attaching disgrace; reproachful; scurrilous; as, opprobrious language.
Opprobrious (a.) Infamous; despised; rendered hateful; as, an opprobrious name.
Opprobrious (a.) Expressing offensive reproach [syn: {abusive}, {opprobrious}, {scurrilous}].
Opprobrious (a.) (used of conduct or character) Deserving or bringing disgrace or shame; "Man...has written one of his blackest records as a destroyer on the oceanic islands"- Rachel Carson; "an ignominious retreat"; "inglorious defeat"; "an opprobrious monument to human greed"; "a shameful display of cowardice" [syn: {black}, {disgraceful}, {ignominious}, {inglorious}, {opprobrious}, {shameful}].
Opprobrium (n.) A state of disgrace; infamy; reproach mingled with contempt; odium [3].
Opprobrium (n.) Abusive language.
Being both dramatic author and dramatic performer, he found himself heir to a twofold opprobrium. -- De Quincey.
Opprobry (n.) Opprobrium. [Obs.] -- Johnson.
Oppugned (imp. & p. p.) of Oppugn.
Oppugning (p pr. & vb. n.) of Oppugn.
Oppugn (v. t.) 反駁；攻擊 To fight against; to attack; to be in conflict with; to oppose; to resist.
They said the manner of their impeachment they could not but conceive did oppugn the rights of Parliament. -- Clarendon.
Oppugnancy (n.) The act of oppugning; opposition; resistance. -- Shak.
Oppugnant (a.) 反對的；相反的；敵對的 Tending to awaken hostility; hostile; opposing; warring. "Oppugnant forces." -- I. Taylor. -- n. An opponent. [R.] -- Coleridge.
Oppugnant (n.) An opponent.
Oppugnation (n.) Opposition. [R.] -- Bp. Hall.
Oppugner (n.) One who opposes or attacks; that which opposes. -- Selden.
Oppugner (n.) (pl. Ooppugners) Someone who oppugns; an opponent.