Defn: Pertaining to, or produced by, chemosmosis. [R.]
CHEMOSYNTHESIS
Chem`o*syn"the*sis, n. [Chemical + synthesis.] (Plant Physiol.)
Defn: Synthesis of organic compounds by energy derived from chemical changes or reactions. Chemosynthesis of carbohydrates occurs in the nitrite bacteria through the oxidation of ammonia to nitrous acid, and in the nitrate bacteria through the conversion of nitrous into nitric acid. — Chem`o*syn*thet"ic (#), a.
CHEMOTAXIS; CHEMIOTAXIS Chem`o*tax"is, n. Formerly also Chem`i*o*tax"is. [Chemical + Gr. arrangement, fr. to arrange.] (Biol.)
Defn: The sensitiveness exhibited by small free-swimming organisms, as bacteria, zoöspores of algæ, etc., to chemical substances held in solution. They may be attracted (positive chemotaxis) or repelled (negative chemotaxis). — Chem`o*tac"tic (#), a. — Chem`o*tac"tic*al*ly, adv.
CHEMUNG PERIOD
Che*mung" pe"ri*od, (Geol.)
Defn: A subdivision in the upper part of the Devonian system in
America, so named from the Chemung River, along which the rocks are
well developed. It includes the Portage and Chemung groups or epochs.
See the Diagram under Geology.
CHENG
Cheng, n. Etym: [Chinese.]
Defn: A chinese reed instrument, with tubes, blown by the mouth.
CHENILLE
Che*nille", n. Etym: [F., prop., a caterpillar.]