phototaxis
Concise Oxford English Dictionary © 2008 Oxford University Press:
phototaxis /ˌfəʊtəʊˈtaksɪs/
▶noun (pl. phototaxes) Biology the bodily movement of a motile organism in response to light.
– derivatives
phototactic adjective.
phototactic adjective.
'phototaxis' also found in these Oxford entries:

