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thermotropism Definition

ther·mot·ro·pism (t̸hər mä′trə piz′əm)

noun

Biol. any positive, or negative, movement or growth of a plant or sessile animal toward, or away from, a source of heat

Etymology: thermo- + -tropism

Related Forms:

  • thermotropic ther′mo·trop′ic (t̸hʉr′mə träp′ik) adjective