n. (1940) [ Bacillus + Margaret Tracy, (a child whose tissues contained Bacillus subtilis) + -in. RHUD. ] a polypeptide antibacterial antibiotic of known chemical structure effective against several types of Gram-positive organisms, and usually used topically for superficial local infection. It is produced by Bacillus subtilis and Bacillus licheniformis, and as produced commercially is composed of several closely related substances. The predominant component, Bacitracin A, has a formula C60H103N17O16S, and contains D-ornithine, D-phenylalanine and D-glutamine residues as well as the L-isomers of leucine, isoleucine, histidine, asparagine and aspartic acid. [ MI11 ] [ WordNet 1.5 ]

a. [ L. calcitrans, p. pr. of calcitrare to kick, fr. calx, calcis , heel. ] Kicking. Hence: Stubborn; refractory. [ 1913 Webster ]

v. t. & i. [ L. calcitratus, p. p. of calcitrare. See Calcitrant. ] To kick. [ 1913 Webster ]

n. Act of kicking. [ 1913 Webster ]

a. [ Citric + aconitic. ] Pertaining to, derived from, or having certain characteristics of, citric and aconitic acids. [ 1913 Webster ]

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. [ 1913 Webster ]

n. [ Citrus + orange. ] A citrous fruit produced by a cross between the sweet orange and the trifoliate orange (Citrus trifoliata). It is more acid and has a more pronounced aroma than the orange; the tree is hardier. There are several varieties. [ Webster 1913 Suppl. ]

n. [ From Citric. ] (Chem.) A salt of citric acid. [ 1913 Webster ]

a. [ Cf. F. citrique. See Citron. ] (Chem.) Of, pertaining to, or derived from, the citron or lemon; as, citric acid. [ 1913 Webster ]

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. [ 1913 Webster ]

n. a vitamin that maintains the resistance of cell and capillary walls to permeation; -- called also vitamin P.
Syn. -- vitamin P, bioflavinoid. [ WordNet 1.5 ]

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. [ 1913 Webster ]

a. [ F. citrin. See Citron. ] Like a citron or lemon; of a lemon color; greenish yellow. [ 1913 Webster ]

Citrine ointment (Med.), a yellowish mercurial ointment, the unguentum hydrargyri nitratis. [ 1913 Webster ]

n. A yellow, pellucid variety of quartz. [ 1913 Webster ]

n. [ F. citron, LL. citro, fr. L. citrus citron tree (cf. citreum, sc. malum, a citron), from Gr. ki`tron citron ] 1. (Bot) A fruit resembling a lemon, but larger, and pleasantly aromatic; it is produced by the citron tree (Citrus medica). The thick rind, when candied, is the citron of commerce. The fruit was once called the lime. [ 1913 Webster ]

2. A citron tree, Citrus medica. [ 1913 Webster ]

3. A citron melon. [ 1913 Webster ]

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. [ 1913 Webster ]

n. a cross between Citrus sinensis and Poncirus trifoliata.
Syn. -- genus Citroncirus. [ WordNet 1.5 ]

n. 1. wood of a citron tree. [ WordNet 1.5 ]

2. a durable fragrant wood used in building (as in the roof of Cordova Cathedral); -- called also sandarac.
Syn. -- sandarac. [ WordNet 1.5 ]

adj. of or pertaining to a citrus tree; as, a citrous disease.
Syn. -- citrus. [ WordNet 1.5 ]

2. of or pertaining to citrus. the citrus production of Florida
Syn. -- citrus. [ WordNet 1.5 ]

n. an amino acid that is an intermediate in the conversion of ornithine to arginine. [ WordNet 1.5 ]

n. a genus of vines including the watermelons (Citrullus lanata).
Syn. -- genus Citrullus. [ WordNet 1.5 ]

‖n. [ L., a citron tree. ] 1. (Bot.) A genus of trees including the orange, lemon, lime, tangerine, citron, grapefruit, etc., originally natives of southern Asia. [ 1913 Webster ]

2. (Bot.) any tree belonging to the genus Citrus, having leathery evergreen leaves and bearing a soft pulpy fruit covered by a thick skin; -- called also citrus tree. [ PJC ]

3. (Bot.) the fruit of a tree belonging to the genus Citrus, having a thick shiny skin and a soft, sweet to tart pulp. [ PJC ]

n. (Bot.) same as citrus{ 2 }. [ PJC ]

a. [ Pyro- + citric: cf. F. pyrocitrique. ] (Chem.) Pertaining to, or designating, any one of three acids obtained by the distillation of citric acid, and called respectively citraconic, itaconic, and mesaconic acid. [ 1913 Webster ]

n. [ Cf. F. quercitrin. See Quercitron. ] (Chem.) A glucoside extracted from the bark of the oak (Quercus) as a bitter citron-yellow crystalline substance, used as a pigment and called quercitron. [ 1913 Webster ]

n. [ F. quercitron, the name of the name of tree; L. quercus an oak + citrus the citron tree. ] 1. The yellow inner bark of the Quercus tinctoria, the American black oak, yellow oak, dyer's oak, or quercitron oak, a large forest tree growing from Maine to eastern Texas. [ 1913 Webster ]

2. Quercitrin, used as a pigment. See Quercitrin. [ 1913 Webster ]

a. [ L. recalcitrans, p. pr. of recalcitrare to kick back; pref. re- re- + calcitrare to kick, fr. calx heel. Cf. Inculcate. ] Kicking back; recalcitrating; hence, showing repugnance or opposition; refractory. [ 1913 Webster ]

v. i. To kick back; to kick against anything; hence, to express repugnance or opposition. [ 1913 Webster ]

v. t. To kick against; to show repugnance to; to rebuff. [ 1913 Webster ]

The more heartily did one disdain his disdain, and recalcitrate his tricks. De Quincey. [ 1913 Webster ]

n. A kicking back again; opposition; repugnance; refractoriness. [ 1913 Webster ]

n. A woman who solicits. [ 1913 Webster ]

n. (Chem.) A yellow crystalline glucoside obtained from the pansy (Viola tricolor), and decomposing into glucose and quercitrin. [ 1913 Webster ]