Part 409

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 (sns), 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, after that; fr. sð after, later, adv. and prep. (originally a comparative adv., akin to OS. sð afterward, since, OHG. sd, G. seit since, Goth. seiþus late, ni þanaseiþs no longer) + ðon instrumental of the demonstrative and article. See That.] 1. From a definite past time until now; as, he went a month ago, and I have not seen him since. [1913 Webster]

We since become the slaves to one man's lust.

B. Jonson.

2. In the time past, counting backward from the present; before this or now; ago.

How many ages since has Virgil writ?

Roscommon.

About two years since, it so fell out, that he was brought to a great lady's house.

Sir P. Sidney.

3. When or that. [Obs.]

Do you remember since we lay all night in the windmill in St. George's field?

Shak.

Since, prep. From the time of; in or during the time subsequent to; subsequently to; after; -- usually with a past event or time for the object.

The Lord hath blessed thee, since my coming.

Gen. xxx. 30.

I have a model by which he build a nobler poem than any extant since the ancients.

Dryden.

Since, conj. Seeing that; because; considering; -- formerly followed by that.

Since that my penitence comes after all, Imploring pardon.

Shak.

Since truth and constancy are vain, Since neither love, nor sense of pain, Nor force of reason, can persuade, Then let example be obeyed.

Granville.

Syn. -- Because; for; as; inasmuch as; considering. See Because.

Sin*cere" (?), a. [Compar. Sincerer (?); superl. Sincerest.] [L. sincerus, of uncertain origin; the first part perhaps akin to sin- in singuli (see Single), and the second to cernere to separate (cf. Discern): cf. F. sincère.] 1. Pure; unmixed; unadulterated.