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Sulphinic :: Sulphine (n.) Any one of a series of basic compounds which consist essentially of sulphur united with hydrocarbon radicals. In general they are oily or crystalline deliquescent substances having a peculiar odor; as, trimethyl sulphine, (CH3)3S.OH. Cf. Sulphonium..

Cellulose :: Cellulose (n.) The substance which constitutes the essential part of the solid framework of plants, of ordinary wood, linen, paper, etc. It is also found to a slight extent in certain animals, as the tunicates. It is a carbohydrate, (C6H10O5)n, isomeric with starch, and is convertible into starches and sugars by the action of heat and acids. When pure, it is a white amorphous mass. See Starch, Granulose, Lignin..

Extrinsic :: Extrinsic (a.) Not contained in or belonging to a body; external; outward; unessential; -- opposed to intrinsic.

Must :: Must (v. i. / auxiliary) To be morally required; to be necessary or essential to a certain quality, character, end, or result; as, he must reconsider the matter; he must have been insane..

Cacaine :: Cacaine (n.) The essential principle of cacao; -- now called theobromine.

Adventitious :: Adventitious (a.) Added extrinsically; not essentially inherent; accidental or causal; additional; supervenient; foreign.

Necessary :: Necessary (n.) A thing that is necessary or indispensable to some purpose; something that one can not do without; a requisite; an essential; -- used chiefly in the plural; as, the necessaries of life..

Hepar :: Hepar (n.) Liver of sulphur; a substance of a liver-brown color, sometimes used in medicine. It is formed by fusing sulphur with carbonates of the alkalies (esp. potassium), and consists essentially of alkaline sulphides. Called also hepar sulphuris (/)..

Substantive :: Substantive (a.) Pertaining to, or constituting, the essential part or principles; as, the law substantive..

Chloropal :: Chloropal (n.) A massive mineral, greenish in color, and opal-like in appearance. It is essentially a hydrous silicate of iron..

Point :: Point (n.) Hence, the most prominent or important feature, as of an argument, discourse, etc.; the essential matter; esp., the proposition to be established; as, the point of an anecdote..

Circumstantial :: Circumstantial (a.) Incidental; relating to, but not essential..

Distill :: Distill (v. t.) To obtain by distillation; to extract by distillation, as spirits, essential oil, etc.; to rectify; as, to distill brandy from wine; to distill alcoholic spirits from grain; to distill essential oils from flowers, etc.; to distill fresh water from sea water..

Carmine :: Carmine (n.) The essential coloring principle of cochineal, extracted as a purple-red amorphous mass. It is a glucoside and possesses acid properties; -- hence called also carminic acid..

Indogen :: Indogen (n.) A complex, nitrogenous radical, C8H5NO, regarded as the essential nucleus of indigo..

Digitain :: Digitain (n.) A supposedly distinct vegetable principle as the essential ingredient of the extracts. It is a white, crystalline substance, and is regarded as a glucoside..

Attar :: Attar (n.) A fragrant essential oil; esp., a volatile and highly fragrant essential oil obtained from the petals of roses..

Dolerite :: Dolerite (n.) A dark-colored, basic, igneous rock, composed essentially of pyroxene and a triclinic feldspar with magnetic iron. By many authors it is considered equivalent to a coarse-grained basalt..

Soul :: Soul (n.) The seat of real life or vitality; the source of action; the animating or essential part.

Appoggiatura :: Appoggiatura (n.) A passing tone preceding an essential tone, and borrowing the time it occupies from that; a short auxiliary or grace note one degree above or below the principal note unless it be of the same harmony; -- generally indicated by a note of smaller size, as in the illustration above. It forms no essential part of the harmony..

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