geotropism

The definition of geotropism is the growth of a plant or immovable animal in response to the force of gravity.

(noun)

An example of geotropism is the roots of a plant growing down into the ground.

See geotropism in Webster's New World College Dictionary

noun

any positive (or negative) movement or growth of a plant or sessile animal in response to (or against) the force of gravity

Origin: geo- + -tropism

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See geotropism in American Heritage Dictionary 4

noun

The growth of a living organism in response to gravity, as the downward growth of plant roots.

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