phototaxis

or pho·to·tax·y

[ foh-tuh-tak-sis ]
/ ˌfoʊ təˈtæk sɪs /

noun Biology.

movement of an organism toward or away from a source of light.

Origin of phototaxis

First recorded in 1900–05; photo- + -taxis

OTHER WORDS FROM phototaxis

pho·to·tac·tic [foh-tuh-tak-tik] /ˌfoʊ təˈtæk tɪk/, adjective pho·to·tac·ti·cal·ly, adverb

Words nearby phototaxis

photostethoscope, photosynthate, photosynthesis, photosynthesize, photosystem, phototaxis, phototelegraphy, phototheodolite, phototherapeutics, phototherapy, photothermic

British Dictionary definitions for phototaxis

phototaxis

phototaxy

/ (ˌfəʊtəʊˈtæksɪs) /

noun

the movement of an entire organism in response to light

Derived forms of phototaxis

phototactic (ˌfəʊtəʊˈtæktɪk), adjective

Medical definitions for phototaxis

phototaxis
[ fō′tō-tăk′sĭs ]

n.

The movement of an organism or cell toward or away from a source of light.

Other words from phototaxis

pho′to•tac′tic (-tăk′tĭk) adj.