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Definition of: thermotropism
(thər·mot′rə·piz′əm) noun Biol.
1. The property or phenomenon of movement in growing plants or other organisms brought about by the influence of heat or cold.
2. The attraction or repulsion from a source of heat evinced by some bacteria.
—ther·mo·trop·ic (thûr′mō·trop′ik) adjective
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