tropism
(noun) an involuntary orienting response; positive or negative reaction to a stimulus source
Source: WordNet® 3.1
tropism (countable and uncountable, plural tropisms)
(biology) The turning of an organism in response to a stimulus, either towards or away from the stimulus.
(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.
• imports, primost, promist
Source: Wiktionary
Tro"pism, n. [Gr. a turning, to turn + -ism.] (Physiol.)
Definition: Modification of the direction of growth.
Source: Webster’s Unabridged Dictionary 1913 Edition
2 April 2025
(adjective) secret or hidden; not openly practiced or engaged in or shown or avowed; “covert actions by the CIA”; “covert funding for the rebels”
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