Meaning of phototropic

pho•to•trop•ic

Pronunciation: (fō"tu-trop'ik, -trō'pik), [key]
— adj. Bot.
  1. growing toward or away from the light.
  2. taking a particular direction under the influence of light.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.