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 |