Photodynamics \Pho`to*dy*nam"ics\, n. [Photo- + dynamics.]
(Plant Physiol.)
The relation of light to the movements of plants and their
organs; the study of the phenomena of curvatures induced by
the stimulus of light. -- {Pho`to*dy*nam"ic},
{Pho`to*dy*nam"ic*al}, a.
[Webster 1913 Suppl.]