Definition of photophilic in US English:

photophilic

adjective

Biology
  • Tending to move towards or thrive in regions of greater light intensity.

Origin

Early 20th century; earliest use found in Alfred Ewart (1872–1937), botanist. From photo- + -philic.

Pronunciation

photophilic

/ˌfəʊtə(ʊ)ˈfɪlɪk/