Citraconic acid(Chem.), a white, crystalline, deliquescent substance, C3H4(CO2H)2, obtained by distillation of citric acid. It is a compound of the ethylene series.

(Cit"rate) n. [From Citric.] (Chem.) A salt of citric acid.

(Cit"ric) a. [Cf. F. citrique. See Citron.] (Chem.) Of, pertaining to, or derived from, the citron or lemon; as, citric acid.

Citric acid(Chem.), an organic acid, C3H4OH.(CO2H)3, extracted from lemons, currants, gooseberries, etc., as a white crystalline substance, having a pleasant sour taste.

(Cit`ri*na"tion) n. [See Citrine.] The process by which anything becomes of the color of a lemon; esp., in alchemy, the state of perfection in the philosopher's stone indicated by its assuming a deep yellow color. Thynne.

(Cit"rine) a. [F. citrin. See Citron.] Like a citron or lemon; of a lemon color; greenish yellow.

Citrine ointment(Med.), a yellowish mercurial ointment, the unguentum hydrargyri nitratis.

(Cit"rine), n. A yellow, pellucid variety of quartz.

(Cit"ron) n. [F. citron, LL. citro, fr. L. citrus citron tree from Gr. ki`tron citron]

1. (Bot) A fruit resembling a lemon, but larger, and pleasantly aromatic. The thick rind, when candied, is the citron of commerce.

2. A citron tree.

3. A citron melon.

Citron melon. (a) A small variety of muskmelon with sugary greenish flesh. (b) A small variety of watermelon, whose solid white flesh is used in making sweetmeats and preserves.Citron tree(Bot.), the tree which bears citrons. It was probably a native of northern India, and is now understood to be the typical form of Citrus Medica.

(||Cit"rus) n. [L., a citron tree.] (Bot.) A genus of trees including the orange, lemon, citron, etc., originally natives of southern Asia.

(Cit"tern) n. [L. cithara, Gr. kiqa`ra. Cf. Cithara, Gittern.] (Mus.) An instrument shaped like a lute, but strung with wire and played with a quill or plectrum. [Written also cithern.] Shak.

Not to be confounded with zither.

(Cit"tern-head`) n. Blockhead; dunce; — so called because the handle of a cittern usually ended with a carved head. Marsion

(Cit"y) n.; pl. Cities [OE. cite, F. cité, fr. L. civitas citizenship, state, city, fr. civis citizen; akin to Goth. heiwa AS. hiwan, pl., members of a family, servants, hired family, G. heirath marriage, prop., providing a house, E. hind a peasant.]

1. A large town.

(Cit`ra*con"ic) a. [Citric + aconitic.] Pertaining to, derived from, or having certain characteristics of, citric and aconitic acids.

  By PanEris using Melati.

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