tropism

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”).

tropism (countable and uncountable, plural tropisms)

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

(biology): 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.

See terms derived from -tropism for compounds.

• imports, primost, promist