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A crystalline, nitrogenous substance, with a sweet taste, formed from hippuric acid by boiling with hydrochloric acid, and present in bile united with cholic acid. It is also formed from gelatin by decomposition with acids. Chemically, it is amido-acetic acid. Called also glycin, and glycocin.

mbryo. It is quickly changed into sugar when boiled with dilute sulphuric or hydrochloric acid, and also by the action of amylolytic ferments.

)2, of a sweetish taste, produced artificially from certain ethylene compounds. It is a diacid alcohol, intermediate between ordinary ethyl alcohol and glycerin.

Pertaining to, or derived from, glycol; as, glycolic ether; glycolic acid. Glycolic acid (Chem.), an organic acid, found naturally in unripe grapes and in the leaves of the wild grape (Ampelopsis quinquefolia), and produced artificially in many ways, as by the oxidation of glycol, -- whence its name. It is a sirupy, or…

A white amorphous powder, C4H4O, obtained by heating and dehydrating glycolic acid. [Written also glycollide.]

Pertaining to, derived from, glycol and urea; as, glycoluric acid, which is called also hydantoic acid.

A divalent, compound radical, CO.CH2, regarded as the essential radical of glycolic acid, and a large series of related compounds.

From, or pertaining to, glycyrrhizin; as, glycyrrhizimic acid.

ed by the partial oxidation of glycol. It is a double aldehyde, between glycol and oxalic acid.

Pertaining to, or designating, an aldehyde acid, intermediate between glycol and oxalic acid. [Written also glyoxylic.]

llulose, it is colored blue by iodine, and is converted into dextrin and sugar by boiling acids and amylolytic ferments.

d. Graphite battery (Elec.), a voltaic battery consisting of zinc and carbon in sulphuric acid, or other exciting liquid.

Pertaining to, containing, derived from, or resembling, graphite. Graphitic acid (Chem.), an organic acid, so called because obtained by the oxidation of graphite; -- usually called mellitic acid. -- Graphitic carbon, in iron or steel, that portion of the carbon which is present as graphite. Raymond.…

ubstance or pigment of a green color. Alkali green (Chem.), an alkali salt of a sulphonic acid derivative of a complex aniline dye, resembling emerald green; -- called also Helvetia green.-- Berlin green. (Chem.) See under Berlin. -- Brilliant green (Chem.), a complex aniline dye, resembling emerald green in compositi…

l varieties, among which the Rhode Island greening is the best known for its fine-grained acid flesh and its excellent keeping quality.

A gummy composition spread over the surface of a metal to be etched, to prevent the acid from eating except where an opening is made by the needle.

tained combined with methyl in the decomposition of creatin. Boiled with dilute sulphuric acid, it yields urea and ammonia.

Of or pertaining to the blood; sanguine; brownish red. Hæmatic acid (Physiol.), a hypothetical acid, supposed to be formed from hemoglobin during its oxidation in the lungs, and to have the power of freeing carbonic acid from the sodium carbonate of the serum. Thudichum.

the hematin of blood, by removal of the iron through the action of concentrated sulphuric acid. Two like bodies, called respectively hæmatoporphyrin and hæmatolin, are formed in a similar manner.

Rough; acid; sour, as liquors; as, hard cider.