Main Entry:

tax·is

Pronunciation:

\ˈtak-səs\

Function:

noun

Inflected Form(s):

plural tax·es \-ˌsēz\

Etymology:

Greek, literally, arrangement, order, from tassein to arrange

Date:

1899

1 : reflex translational or orientational movement by a freely motile and usually simple organism in relation to a source of stimulation (as a light or a temperature or chemical gradient) 2 : a reflex reaction involving a taxis