tropism

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English[edit]

Etymology[edit]

From -tropism, from geotropism and heliotropism,[1] from Latin tropus (English trope, from Ancient Greek τρόπος (trópos, a turn, way, manner, style, a trope or figure of speech, a mode in music, a mode or mood in logic), from τροπή (tropḗ, turn; solstice; trope).

Noun[edit]

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tropism (plural tropisms)

  1. (biology) the turning of an organism in response to a stimulus, either towards or away from the stimulus
  2. (virology) viral tropism, or which type of tissue supports a certain virus

Usage notes[edit]

Distinguished from taxis in that in a taxis, the organism has motility and moves towards or away from stimulus (e.g., bacteria, animals), while in a tropism the organism is not motile, and simply turns or grows towards or away from stimulus (e.g., plants, fungi). Similarly, kinesis is distinguished as non-directional movement.

In compound terms, analyzed as suffix -tropism, not stand-alone tropism.

Derived terms[edit]

See terms derived from -tropism for compounds.

Translations[edit]

References[edit]

  1. ^ tropism” in Douglas Harper, Online Etymology Dictionary (2001).

Anagrams[edit]