(Sin*al"bin) n. [From L. Sinapis + alba.] (Chem.) A glucoside found in the seeds of white
mustard (Brassica alba, formerly Sinapis alba), and extracted as a white crystalline substance.
(Sin*am"ine) n. [Sinapis + melamine.] (Chem.) A bitter white crystalline nitrogenous substance,
obtained indirectly from oil of mustard and ammonia; called also allyl melamine.
(Sin"a*pate) n. (Chem.) A salt of sinapic acid.
(Sin"a*pic) a. (Chem.) Of or pertaining to sinapine; specifically, designating an acid (C11H12O5)
related to gallic acid, and obtained by the decomposition of sinapine, as a white crystalline substance.
(Sin"a*pine) n. [L. sinapi, sinapis, mustard, Gr. : cf. F. sinapine.] (Chem.) An alkaloid
occuring in the seeds of mustard. It is extracted, in combination with sulphocyanic acid, as a white crystalline
substance, having a hot, bitter taste. When sinapine is isolated it is unstable and undergoes decomposition.
(||Si*na"pis) n. [L.] (Bot.) A disused generic name for mustard; now called Brassica.
(Sin"a*pis`in) n. (Chem.) A substance extracted from mustard seed and probably identical
with sinalbin. [Obs.]
(Sin"a*pism) n. [L. sinapismus, Gr. the use of a mustard blister, fr. to apply a mustard blister,
fr. mustard.] (Med.) A plaster or poultice composed principally of powdered mustard seed, or containing
the volatile oil of mustard seed. It is a powerful irritant.
(Sin`a*po*le"ic) a. [Sinapis + oleic.] (Chem.) Of or pertaining to mustard oil; specifically,
designating an acid of the oleic acid series said to occur in mistard oil.
(Si*nap"o*line) n. [Sinapis + L. oleum oil.] (Chem.) A nitrogenous base, CO.(NH.C3H5)2,
related to urea, extracted from mustard oil, and also produced artifically, as a white crystalline substance;
called also diallyl urea.
(Sin"ca*line) n. [So called because obtained by the action of alkalies on sinapine.] (Chem.)
Choline. [Written also sinkaline.]
(Since) adv. [For sins, contr. fr. OE. sithens, sithenes, formed by an adverbial ending (cf. Besides)
from OE. sithen, also shortened into sithe, sin, AS. siððan, syððan, seoððan, afterward, then, since, after; properly,