资料来源 : pyDict

向性,趋性,屈性

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Tropism \Tro"pism\, n. [Gr. ? a turning, ? to turn + -ism.]
   (Physiol.)
   Modification of the direction of growth.

资料来源 : WordNet®

tropism
     n : an involuntary orienting response; positive or negative
         reaction to a stimulus source