(n) any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter, Syn.element
a. Pertaining to chemistry; characterized or produced by the forces and operations of chemistry; employed in the processes of chemistry; as, chemical changes; chemical combinations. [ 1913 Webster ]
Chemical attractionor Chemical affinity. See under Attraction. [ 1913 Webster ]
n. [ Chemical + -graphy. ] Any mechanical engraving process depending upon chemical action; specif., a process of zinc etching not employing photography. -- Chem`i*graph"ic a. [Webster 1913 Suppl.]
{ n. Formerly also }. [ Chemical + Gr. &unr_; arrangement, fr. &unr_; to arrange. ] (Biol.) The sensitiveness exhibited by small free-swimming organisms, as bacteria, zoospores 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. [ Webster 1913 Suppl. ]
n. [ F., shirt, fr. LL. camisa, camisia, shirt, thin dress; cf. G. hemd, or OIr. caimmse sort of garment. Cf. Camis. ] 1. A shift, or undergarment, worn by women. [ 1913 Webster ]
2. A wall that lines the face of a bank or earthwork. [ 1913 Webster ]
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