PHOTOTROPISM

phototropism

(noun) an orienting response to light

Source: WordNet® 3.1

Etymology

Noun

phototropism (countable and uncountable, plural phototropisms)

(biology) the movement of a plant towards or away from light

Antonyms

• scototropism, skototropism

Source: Wiktionary

Pho*tot"ro*pism, n. [Photo-+ Gr. to turn.] (Plant Physiol.)

Definition: The tendency of growing plant organs to move or curve under the influence of light. In ordinary use the term is practically synonymous with heliotropism.

Source: Webster’s Unabridged Dictionary 1913 Edition

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