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单词 geotropism
释义 ge·ot·ro·pism
\jēˈä.trəˌpizəm\ noun
Etymology: International Scientific Vocabulary ge- + -tropism; originally formed as German geotropismus
1. : tropism in which gravitational attraction is the orienting factor (as in roots growing down, shoots growing up, and the climbing, swimming, or right-side-up orientation of certain animals)
2. : tropism in which turning or movement is toward rather than away from the earth — compare apogeotropism
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更新时间:2024/11/11 0:35:08