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That variety of xylene in which the two methyl groups are in the ortho position; a colorless, liquid, combustible hydrocarbon resembling benzene.

A colorless buttery substance obtained from the fruit of Myristica otoba, a species of nutmeg tree.

A colorless, tasteless, odorless, gaseous element occurring in the free state in the atmosphere, of which it forms about 23 per cent by weight and about 21 per cent by volume, being slightly heavier than nitrogen. Symbol O. Atomic weight 15.96.

A colorless gaseous substance (O

ncreas; as, the pancreatic secretion, digestion, ferments. Pancreatic juice (Physiol.), a colorless alkaline fluid secreted intermittently by the pancreatic gland. It is one of the most important of the digestive fluids, containing at least three distinct ferments, trypsin, steapsin and an amylolytic ferment, by which…

A base resembling and isomeric with conine, and obtained as a colorless liquid from butyric aldehyde and ammonia.

A hydrocarbon of the aromatic series obtained as a colorless liquid by the distillation of camphor with zinc chloride. It is one of the three metamers of xylene. Cf. Metamer, and Xylene.

Transparent and colorless rock crystal; as, Brazilian pebble; -- so called by opticians. Pebble powder, slow-burning gunpowder, in large cubical grains. -- Scotch pebble, varieties of quartz, as agate, chalcedony, etc., obtained from cavities in amygdaloid.

bon of the paraffin series, (C15H32) found in petroleum, tar oil, etc., and obtained as a colorless liquid; -- so called from the fifteen carbon atoms in the molecule.

e of the three metameric hydrocarbons, C5H12, of the methane or paraffin series. They are colorless, volatile liquids, two of which occur in petroleum. So called because of the five carbon atoms in the molecule.

A colorless variety of chabazite; the original was from Leipa, in Bohemia.

A glassy colorless mineral occurring in rhombohedral crystals, sometimes used as a gem. It is a silicate of glucina, and receives its name from its deceptive similarity to quartz.

. -- Phenyl hydrazine (Chem.), a nitrogenous base (C6H5.N2H3) produced artificially as a colorless oil which unites with acids, ketones, etc., to form well-crystallized compounds.

A colorless gas, PH3, analogous to ammonia, and having a disagreeable odor resembling that of garlic. Called also hydrogen phosphide, and formerly, phosphureted hydrogen.

A colorless crystalline substance obtained by reduction from phthaleïn, into which it is easily converted by oxidation; hence, any one of the series of which phthalin proper is the type.

lated to pyridine, and obtained from bone oil, acrolein ammonia, and coal-tar naphtha, as colorless mobile liquids of strong odor; -- called also methyl pyridine.

A colorless viscous substance having a bitter-sweet taste.

A colorless oily liquid related to the ketones, and obtained by the decomposition of pinacone; hence, by extension, any one of the series of which pinacolin proper is the type. [Written also pinacoline.]

nd glycerin, used as a substitute for ointments. U. S. Disp. Blood plasma (Physiol.), the colorless fluid of the blood, in which the red and white blood corpuscles are suspended. -- Muscle plasma (Physiol.), the fundamental part of muscle fibers, a thick, viscid, albuminous fluid contained within the sarcolemma, which…

A colorless transparent mineral, resembling quartz, occurring with castor or castorite on the island of Elba. It is a silicate of alumina and cæsia. Called also pollux.