Definition of photonegative in English:
photonegative
adjective fəʊtəʊˈnɛɡətɪvˌfōdōˈneɡədiv
1Biology
(of an organism) tending to move away from light.
Example sentencesExamples
- Homozygous ß3 mutant larvae were also photonegative, but hemizygous ß3 mutant larvae were photoneutral.
- Species commonly initiate strongly photonegative swimming when the intensity of light decreases, such as would occur when a predator passes overhead; the behavior is known as the ‘shadow response.’
2Physics
(of a substance) exhibiting a decrease in electrical conductivity under illumination.
Example sentencesExamples
- In this process, photonegative materials will be removed while photopositive materials remain in the final device.
- This form of dielectric, in one aspect, is a photonegative paste.