Anthraquinone :: Anthraquinone (n.) A hydrocarbon, C6H4.C2O2.C6H4, subliming in shining yellow needles. It is obtained by oxidation of anthracene..

Equinoctial :: Equinoctial (a.) Pertaining to an equinox, or the equinoxes, or to the time of equal day and night; as, the equinoctial line..

Equinoctial :: Equinoctial (a.) Pertaining to the regions or climate of the equinoctial line or equator; in or near that line; as, equinoctial heat; an equinoctial sun..

Equinoctial :: Equinoctial (a.) Pertaining to the time when the sun enters the equinoctial points; as, an equinoctial gale or storm, that is, one happening at or near the time of the equinox, in any part of the world..

Equinoctial :: Equinoctial (n.) The equinoctial line.

Equinoctially :: Equinoctially (adv.) Towards the equinox.

Equinox :: Equinox (n.) The time when the sun enters one of the equinoctial points, that is, about March 21 and September 22. See Autumnal equinox, Vernal equinox, under Autumnal and Vernal..

Equinox :: Equinox (n.) Equinoctial wind or storm.

Hydroquinone :: Hydroquinone (n.) A white crystalline substance, C6H4(OH)2, obtained by the reduction of quinone. It is a diacid phenol, resembling, and metameric with, pyrocatechin and resorcin. Called also dihydroxy benzene..

Interequinoctial :: Interequinoctial (a.) Coming between the equinoxes.

Naphthoquinone :: Naphthoquinone (n.) A yellow crystalline substance, C10H6O2, analogous to quinone, obtained by oxidizing naphthalene with chromic acid..

Nitroquinol :: Nitroquinol (n.) A hypothetical nitro derivative of quinol or hydroquinone, not known in the free state, but forming a well defined series of derivatives..

Oxyquinoline :: Oxyquinoline (n.) Hydroxy quinoline; a phenol derivative of quinoline, -- called also carbostyril..

Quinoa :: Quinoa (n.) The seeds of a kind of goosewort (Chenopodium Quinoa), used in Chili and Peru for making porridge or cakes; also, food thus made..

Quinogen :: Quinogen (n.) A hypothetical radical of quinine and related alkaloids.

Quinoidine :: Quinoidine (n.) A brownish resinous substance obtained as a by-product in the treatment of cinchona bark. It consists of a mixture of several alkaloids.

Quinoline :: Quinoline (n.) A nitrogenous base, C9H7N obtained as a pungent colorless liquid by the distillation of alkaloids, bones, coal tar, etc. It the nucleus of many organic bodies, especially of certain alkaloids and related substances; hence, by extension, any one of the series of alkaloidal bases of which quinoline proper is the type..

Quinologist :: Quinologist (n.) One who is versed in quinology.

Quinology :: Quinology (n.) The science which treats of the cultivation of the cinchona, and of its use in medicine..

Quinone :: Quinone (n.) A crystalline substance, C6H4O2 (called also benzoketone), first obtained by the oxidation of quinic acid and regarded as a double ketone; also, by extension, any one of the series of which quinone proper is the type..

Quinovic :: Quinovic (a.) Pertaining to, or designating, a crystalline acid obtained from some varieties of cinchona bark..

Quinovin :: Quinovin (n.) An amorphous bitter glucoside derived from cinchona and other barks. Called also quinova bitter, and quinova..

Quinoxaline :: Quinoxaline (n.) Any one of a series of complex nitrogenous bases obtained by the union of certain aniline derivatives with glyoxal or with certain ketones.

Quinoxyl :: Quinoxyl (n.) The hypothetical radical of certain quinone derivatives related to rhodizonic acid.

Quinoyl :: Quinoyl (n.) A radical of which quinone is the hydride, analogous to phenyl..

Xyloquinone :: Xyloquinone (n.) Any one of a group of quinone compounds obtained respectively by the oxidation of certain xylidine compounds. In general they are yellow crystalline substances.

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