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Chrysarobin :: Chrysarobin (n.) A bitter, yellow substance forming the essential constituent of Goa powder, and yielding chrysophanic acid proper; hence formerly called also chrysphanic acid..

Thiophene :: Thiophene (n.) A sulphur hydrocarbon, C4H4S, analogous to furfuran and benzene, and acting as the base of a large number of substances which closely resemble the corresponding aromatic derivatives..

Buff :: Buff (n.) The grayish viscid substance constituting the buffy coat. See Buffy coat, under Buffy, a..

Gold :: Gold (v. t.) A metallic element, constituting the most precious metal used as a common commercial medium of exchange. It has a characteristic yellow color, is one of the heaviest substances known (specific gravity 19.32), is soft, and very malleable and ductile. It is quite unalterable by heat, moisture, and most corrosive agents, and therefore well suited for its use in coin and jewelry. Symbol Au (Aurum). Atomic weight 196.7..

Propiolic :: Propiolic (a.) Pertaining to, or designating, an organic acid (called also propargylic acid) of the acetylene or tetrolic series, analogous to propionic acid, and obtained as a white crystalline substance..

Wad :: Wad (n.) A soft mass, especially of some loose, fibrous substance, used for various purposes, as for stopping an aperture, padding a garment, etc..

Protocatechuic :: Protocatechuic (a.) Pertaining to, derived from, or designating, an organic acid which is obtained as a white crystalline substance from catechin, asafetida, oil of cloves, etc., and by distillation itself yields pyrocatechin..

Salicylide :: Salicylide (n.) A white crystalline substance obtained by dehydration of salicylic acid.

Horny :: Horny (superl.) Composed or made of horn, or of a substance resembling horn; of the nature of horn..

Benzoin :: Benzoin (n.) A resinous substance, dry and brittle, obtained from the Styrax benzoin, a tree of Sumatra, Java, etc., having a fragrant odor, and slightly aromatic taste. It is used in the preparation of benzoic acid, in medicine, and as a perfume..

Evaporation :: Evaporation (n.) The process by which any substance is converted from a liquid state into, and carried off in, vapor; as, the evaporation of water, of ether, of camphor..

Skim :: Skim (v. t.) To clear (a liquid) from scum or substance floating or lying thereon, by means of a utensil that passes just beneath the surface; as, to skim milk; to skim broth..

Peptogen :: Peptogen (n.) A substance convertible into peptone.

Cleavage :: Cleavage (n.) The quality possessed by many crystallized substances of splitting readily in one or more definite directions, in which the cohesive attraction is a minimum, affording more or less smooth surfaces; the direction of the dividing plane; a fragment obtained by cleaving, as of a diamond. See Parting..

Pyin :: Pyin (n.) An albuminoid constituent of pus, related to mucin, possibly a mixture of substances rather than a single body..

Nidus :: Nidus (n.) A nest: a repository for the eggs of birds, insects, etc.; a breeding place; esp., the place or substance where parasites or the germs of a disease effect lodgment or are developed..

Fuscine :: Fuscine (n.) A dark-colored substance obtained from empyreumatic animal oil.

Cranny :: Cranny (n.) A small, narrow opening, fissure, crevice, or chink, as in a wall, or other substance..

Isolate :: Isolate (v. t.) To separate from all foreign substances; to make pure; to obtain in a free state.

Nitrophnol :: Nitrophnol (n.) Any one of a series of nitro derivatives of phenol. They are yellow oily or crystalline substances and have well-defined acid properties, as picric acid..

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