from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Biology Drawn to light; exhibiting a positive phototactic or phototropic response.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. having a positive phototropic or phototactic response; attracted by light
Sorry, no etymologies found.
Ladybeetles are photopositive, which means they move toward light.