Defn: Pertaining to, or designating, a crystalline acid obtained from some varieties of cinchona bark. [Written also chinovic, and kinovic.]
QUINOVIN Qui*no"vin, n. Etym: [NL. quina nova the tree Cosmibuena magnifolia, whose bark yields quinovin.] (Chem.)
Defn: An amorphous bitter glucoside derived from cinchona and other barks. Called also quinova bitter, and quinova. [Written also chinovin, and kinovin.]
QUINOXALINE
Quin*ox"a*line, n. Etym: [Quinoline + glyoxal.] (Chem.)
Defn: Any one of a series of complex nitrogenous bases obtained by the union of certain aniline derivatives with glyoxal or with certain ketones. [Written also chinoxaline.]
QUINOXYL
Quin*ox"yl, n. Etym: [Quinone + oxygen + -yl.] (Chem.)
Defn: The hypothetical radical of certain quinone derivatives related to rhodizonic acid.
QUINOYL
Qui"noyl, n. Etym: [Quinone + -yl.] (Chem.)
Defn: A radical of which quinone is the hydride, analogous to phenyl.
[Written also kinoyl.]
QUINQUAGESIMA Quin`qua*ges"i*ma, a. Etym: [L., fr. quinquagesimus the fiftieth, akin to quinquaginta fifty, quinque five. See Five.]