Definition of phototaxis
English to English noun - The influence of light on the movements of low organisms, as various infusorians, the zoöspores of certain algæ, etc.; also, the tendency to follow definite directions of motion or assume definite positions under such influence. If the migration is toward the source of light, it is termed positive phototaxis; if away from the light, negative phototaxis.
source: Webster 1913
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phototaxis, photius, photics, potos, ptosis, potash, pothos, patois, potasa, photic, ptyxis, photoetch, poetise, pettish, potassa, poetics, pottage, potashes, pothouse, popovtsy
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