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-tropism
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Tweet suff. Tropism: phototropism. |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
n. 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. [From -TROPISM.] tropic, tro·pistic adj. tro·pisti·cal·ly adv. |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
