photonegative adjective.
[fǝʊtǝʊ'nɛgǝtɪv] E20.[from PHOTO- + NEGATIVE adjective.]1. Zoology. Of an animal: tending to move away from light.
E20.2. Physics. Pertaining to or exhibiting a decrease in electrical conductivity under illumination.
E20. ■ ,photonega'tivity noun M20. [TahlilGaran] English Dictionary ▲