Definition of positive geotropism in English:

positive geotropism

Line breaks: posi|tive geo|trop¦ism

noun

[mass noun] Botany
The tendency of roots to grow downwards.

Definition of positive geotropism in:

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Word of the day antebellum
Pronunciation: ˌantɪˈbɛləm
adjective
occurring or existing before a particular war…