Larry's Pretty Good Word of the Day (prettygoodword) wrote in 1word1day,
Larry's Pretty Good Word of the Day
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thigmotropism

thigmotropism (thig-MO-truh-piz-uhm) - n., the growth or motion of an organism in response to touch.


Specifically, contact with a solid object -- for example, a tendril twining around a branch. Also called stereotropism, which I'm sure you'll all agree isn't nearly as poetic, or thigmotaxis. Coined in the late 1890s from Greek roots thigma, touch + -tropism, turning toward.

When we touch the sensitive plant, thigmotropism kicks in and its leaves close up.

---L.
Tags: greek, noun, t
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