| alkyne | (noun) a colorless flammable gas used chiefly in welding and in organic synthesis | Synonyms: acetylene, ethyne |
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| androgyne | (noun) one having both male and female sexual characteristics and organs; at birth an unambiguous assignment of male or female cannot be made | Synonyms: epicene, epicene person, gynandromorph, hermaphrodite, intersex |
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| anodyne | (noun) a medicine used to relieve pain | Synonyms: analgesic, pain pill, painkiller |
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| coelogyne | (noun) any of various orchids of the genus Coelogyne with: clusters of fragrant lacy snow-white flowers; salmon-pink solitary flowers; chainlike racemes of topaz and chocolate brown flowers; spikes of delicate white spice-scented flowers; emerald green flowers marked with blue-black | - |
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| cryptocoryne | (noun) any plant of the genus Cryptocoryne; evergreen perennials growing in fresh or brackish water; tropical Asia | Synonyms: water trumpet |
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| dyne | (noun) a unit of force equal to the force that imparts an acceleration of 1 cm/sec/sec to a mass of 1 gram | - |
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| ethyne | (noun) a colorless flammable gas used chiefly in welding and in organic synthesis | Synonyms: acetylene, alkyne |
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| groyne | (noun) a protective structure of stone or concrete; extends from shore into the water to prevent a beach from washing away | Synonyms: breakwater, bulwark, groin, jetty, mole, seawall |
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| langsyne | (noun) past times remembered with nostalgia | Synonyms: auld langsyne, good old days, lang syne, old times |
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