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Massicot :: Massicot (n.) Lead protoxide, PbO, obtained as a yellow amorphous powder, the fused and crystalline form of which is called litharge; lead ocher. It is used as a pigment..

Larva :: Larva (n.) Any young insect from the time that it hatches from the egg until it becomes a pupa, or chrysalis. During this time it usually molts several times, and may change its form or color each time. The larvae of many insects are much like the adults in form and habits, but have no trace of wings, the rudimentary wings appearing only in the pupa stage. In other groups of insects the larvae are totally unlike the parents in structure and habits, and are called caterpillars, grubs, maggots, et

Saccharin :: Saccharin (n.) A bitter white crystalline substance obtained from the saccharinates and regarded as the lactone of saccharinic acid; -- so called because formerly supposed to be isomeric with cane sugar (saccharose).

Volborthite :: Volborthite (n.) A mineral occurring in small six-sided tabular crystals of a green or yellow color. It is a hydrous vanadate of copper and lime.

Quinone :: Quinone (n.) A crystalline substance, C6H4O2 (called also benzoketone), first obtained by the oxidation of quinic acid and regarded as a double ketone; also, by extension, any one of the series of which quinone proper is the type..

Zirconium :: Zirconium (n.) A rare element of the carbon-silicon group, intermediate between the metals and nonmetals, obtained from the mineral zircon as a dark sooty powder, or as a gray metallic crystalline substance. Symbol Zr. Atomic weight, 90.4..

Axis :: Axis (n.) One of several imaginary lines, assumed in describing the position of the planes by which a crystal is bounded..

Cymophane :: Cymophane (n.) See Chrysoberyl.

Golding :: Golding (n.) A conspicuous yellow flower, commonly the corn marigold (Chrysanthemum segetum)..

Hesperetin :: Hesperetin (n.) A white, crystalline substance having a sweetish taste, obtained by the decomposition of hesperidin, and regarded as a complex derivative of caffeic acid..

Chrysotype :: Chrysotype (n.) A photographic picture taken upon paper prepared by the use of a sensitive salt of iron and developed by the application of chloride of gold.

Drysaltery :: Drysaltery (n.) The articles kept by a drysalter; also, the business of a drysalter..

Trysail :: Trysail (n.) A fore-and-aft sail, bent to a gaff, and hoisted on a lower mast or on a small mast, called the trysail mast, close abaft a lower mast; -- used chiefly as a storm sail. Called also spencer..

Phthalimide :: Phthalimide (n.) An imido derivative of phthalic acid, obtained as a white crystalline substance, C6H4.(CO)2NH, which has itself (like succinimide) acid properties, and forms a series of salts. Cf. Imido acid, under Imido..

Crystallogenic :: Crystallogenic (a.) Alt. of Crystallogenica.

Erysipelas :: Erysipelas (n.) St. Anthony's fire; a febrile disease accompanied with a diffused inflammation of the skin, which, starting usually from a single point, spreads gradually over its surface. It is usually regarded as contagious, and often occurs epidemically..

Isodiametric :: Isodiametric (a.) Developed alike in the directions of the several lateral axes; -- said of crystals of both the tetragonal and hexagonal systems.

Quassin :: Quassin (n.) The bitter principle of quassia, extracted as a white crystalline substance; -- formerly called quassite..

Amazon :: Amazon (n.) A name numerous species of South American parrots of the genus Chrysoti.

Dinaphthyl :: Dinaphthyl (n.) A colorless, crystalline hydrocarbon, C20H14, obtained from naphthylene, and consisting of a doubled naphthylene radical..

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