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Chloral :: Chloral (n.) A colorless oily liquid, CCl3.CHO, of a pungent odor and harsh taste, obtained by the action of chlorine upon ordinary or ethyl alcohol..

Quartz :: Quartz (n.) A form of silica, or silicon dioxide (SiO2), occurring in hexagonal crystals, which are commonly colorless and transparent, but sometimes also yellow, brown, purple, green, and of other colors; also in cryptocrystalline massive forms varying in color and degree of transparency, being sometimes opaque..

Chondrin :: Chondrin (n.) A colorless, amorphous, nitrogenous substance, tasteless and odorless, formed from cartilaginous tissue by long-continued action of boiling water. It is similar to gelatin, and is a large ingredient of commercial gelatin..

Nonane :: Nonane (n.) One of a group of metameric hydrocarbons C9H20 of the paraffin series; -- so called because of the nine carbon atoms in the molecule. Normal nonane is a colorless volatile liquid, an ingredient of ordinary kerosene..

Tetrathionic :: Tetrathionic (a.) Of, pertaining to, or designating, a thionic derivative, H/S/O/, of sulphuric acid, obtained as a colorless, odorless liquid..

Crotonylene :: Crotonylene (n.) A colorless, volatile, pungent liquid, C4H6, produced artificially, and regarded as an unsaturated hydrocarbon of the acetylene series, and analogous to crotonic acid..

Pebble :: Pebble (n.) Transparent and colorless rock crystal; as, Brazilian pebble; -- so called by opticians..

Cryptopine :: Cryptopine (n.) A colorless crystalline alkaloid obtained in small quantities from opium.

Menthene :: Menthene (n.) A colorless liquid hydrocarbon resembling oil of turpentine, obtained by dehydrating menthol. It has an agreeable odor and a cooling taste..

Mesitylene :: Mesitylene (n.) A colorless, fragrant liquid, C6H3(CH3)3, of the benzene series of hydrocarbons, obtained by distilling acetone with sulphuric acid..

Otoba Fat :: Otoba fat () A colorless buttery substance obtained from the fruit of Myristica otoba, a species of nutmeg tree..

Volvox :: Volvox (n.) A genus of minute, pale-green, globular, organisms, about one fiftieth of an inch in diameter, found rolling through water, the motion being produced by minute colorless cilia. It has been considered as belonging to the flagellate Infusoria, but is now referred to the vegetable kingdom, and each globule is considered a colony of many individuals. The commonest species is Volvox globator, often called globe animalcule..

Resorcin :: Resorcin (n.) A colorless crystalline substance of the phenol series, obtained by melting certain resins, as galbanum, asafetida, etc., with caustic potash. It is also produced artificially and used in making certain dyestuffs, as phthalein, fluorescein, and eosin..

Acetal :: Acetal (n.) A limpid, colorless, inflammable liquid from the slow oxidation of alcohol under the influence of platinum black..

Furoin :: Furoin (n.) A colorless, crystalline substance, C10H8O4, from furfurol..

Glycol :: Glycol (n.) A thick, colorless liquid, C2H4(OH)2, of a sweetish taste, produced artificially from certain ethylene compounds. It is a diacid alcohol, intermediate between ordinary ethyl alcohol and glycerin..

Boron :: Boron (n.) A nonmetallic element occurring abundantly in borax. It is reduced with difficulty to the free state, when it can be obtained in several different forms; viz., as a substance of a deep olive color, in a semimetallic form, and in colorless quadratic crystals similar to the diamond in hardness and other properties. It occurs in nature also in boracite, datolite, tourmaline, and some other minerals. Atomic weight 10.9. Symbol B..

Bromoform :: Bromoform (n.) A colorless liquid, CHBr3, having an agreeable odor and sweetish taste. It is produced by the simultaneous action of bromine and caustic potash upon wood spirit, alcohol, or acetone, as also by certain other reactions. In composition it is the same as chloroform, with the substitution of bromine for chlorine. It is somewhat similar to chloroform in its effects..

Leucophyll :: Leucophyll (n.) A colorless substance isomeric with chlorophyll, contained in parts of plants capable of becoming green..

Crystal :: Crystal (n.) The material of quartz, in crystallization transparent or nearly so, and either colorless or slightly tinged with gray, or the like; -- called also rock crystal. Ornamental vessels are made of it. Cf. Smoky quartz, Pebble; also Brazilian pebble, under Brazilian..

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