root hair (redirected from Root hairs)

root hair

n.

A thin hairlike outgrowth of an epidermal cell of a plant root that absorbs water and minerals from the soil.

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root hair

A hairlike outgrowth of a plant root that absorbs water and minerals from the soil. Root hairs are tubular extensions of the epidermis that greatly increase the surface area of the root. They are constantly dying off and being replaced by new ones as the root grows and extends itself into the soil.

Thesaurus

Noun

1.

root hair - thin hairlike outgrowth of an epidermal cell just behind the tip; absorbs nutrients from the soil plant organ - a functional and structural unit of a plant or fungus root - (botany) the usually underground organ that lacks buds or leaves or nodes; absorbs water and mineral salts; usually it anchors the plant to the ground