Chem`o*tax"is (?), n. Formerly also
Chem`i*o*tax"is. [Chemical + Gr. &?; arrangement, fr.
&?; 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,
© Webster 1913.