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Definition of Photataxy

{ ||Pho`to*tax"is (?), Pho"to*tax`y (?) }, n. [NL. phototaxis; photo- + Gr. &?; an arranging.] (Biol.) 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. -- Pho`to*tac"tic (#), a. -- Pho`to*tac"tic*al*ly, adv.

{ ||Pho`to*tax"is (?), Pho"to*tax`y (?) }, n. [NL. phototaxis; photo- + Gr. &?; an arranging.] (Biol.) 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. -- Pho`to*tac"tic (#), a. -- Pho`to*tac"tic*al*ly, adv.

- Webster's Unabridged Dictionary (1913)

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The correct Spelling of this word is: Phototaxy

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