Tropism definition

trōpĭzəm
The turning or bending movement of an organism or a part of an organism in a particular direction in response to an external stimulus such as light or gravity.
noun
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The positive, or negative, attraction of a plant or sessile animal toward, or away from, a stimulus, as in the turning of a sunflower toward the light.
noun
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The turning or bending movement of an organism or a part of an organism in a particular direction in response to an external stimulus such as light or gravity.
noun
3
2
The growth or movement of a living organism or anatomical structure toward or away from an external stimulus, such as light, heat, or gravity.
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(biology) The turning of an organism in response to a stimulus, either towards or away from the stimulus.
noun
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Tropism.

Heliotropism.

affix
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(virology) Viral tropism, or which type of tissue supports a certain virus.
noun
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Tropism.

Phototropism.

suffix
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Other Word Forms

Noun

Singular:
tropism
Plural:
tropisms

Origin of tropism

  • From Webster's New World College Dictionary, 5th Edition

  • From Greek tropē a turning –tropic

    From American Heritage Dictionary of the English Language, 5th Edition

  • From –tropism

    From American Heritage Dictionary of the English Language, 5th Edition