Meaning & use
phototaxis
Last updated
The movement of an organism toward or away from a source of light.
See it in a sentence
Moths display strong positive phototaxis, flying directly toward light sources at night.
Biologists studied phototaxis in bacteria to understand how they sense their environment.
A note on using this word
"Positive phototaxis" means movement toward light, while "negative phototaxis" means movement away from it.
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