| opisthotonos |
severe spasm in which the back arches and the head bends back and heels flex toward the back
출처: wordnet.princeton.edu/perl/webwn
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| opening |
an open or empty space in or between things; "there was a small opening between the trees"; "the explosion made a gap in the wall" a ceremony accompanying the start of some enterprise becoming open or being made open; "the opening of his arms was the sign I was waiting for" the first performance (as of a theatrical production); "the opening received good critical reviews" the act of opening something; "the ray of light revealed his cautious opening of the door" opportunity especially for employment or promotion; "there is an opening in the sales department" the initial part of the introduction; "the opening established the basic theme" possibility: a possible alternative; "bankruptcy is always a possibility" orifice: an aperture or hole that opens into a bodily cavity; "the orifice into the aorta from the lower left chamber of the heart" a vacant or unobstructed space that is man-made; "they left a small opening for the cat at the bottom of the door" hatchway: an entrance equipped with a hatch; especially a passageway between decks of a ship a recognized sequence of moves at the beginning of a game of chess; "he memorized all the important chess openings" first step: the first of a series of actions first or beginning; "the memorable opening bars of Beethoven's Fifth"; "the play's opening scene"
출처: wordnet.princeton.edu/perl/webwn
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| opium |
an addictive narcotic extracted from seed capsules of the opium poppy
출처: wordnet.princeton.edu/perl/webwn
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| opportunistic infection |
any infection caused by a microorganism that does not normally cause disease in humans; occurs in persons with abnormally functioning immune systems (as AIDS patients or transplant patients receiving immunosuppressive drugs)
출처: wordnet.princeton.edu/perl/webwn
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| opposition |
resistance: 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" the relation between opposed entities confrontation: the act of hostile groups opposing each other; "the government was not ready for a confrontation with the unions"; "the invaders encountered stiff opposition" a contestant that you are matched against a body of people united in opposing something a direction opposite to another enemy: an armed adversary (especially a member of an opposing military force); "a soldier must be prepared to kill his enemies" the major political party opposed to the party in office and prepared to replace it if elected; "Her Majesty's loyal opposition"
출처: wordnet.princeton.edu/perl/webwn
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