phototropism

 
Pronunciation: /ˌfəʊtə(ʊ)ˈtrəʊpɪz(ə)m, fəʊˈtɒtrəˌpɪz(ə)m/

noun

[mass noun] Biology
  • the orientation of a plant or other organism in response to light, either towards the source of light ( positive phototropism) or away from it ( negative phototropism). Compare with heliotropism, phototaxis.

Derivatives

phototropic

Pronunciation: /-ˈtrɒpɪk/
adjective