Definition for root hair - Oxford Dictionaries Online (World English)

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	root hair (root hair) noun Botany each of a large number of elongated microscopic outgrowths from the outer layer of cells in a root, absorbing moisture and nutrients from the soil.		More words in this category ament anthracnose axis 1 cryptogamic decussate duct entire glochid megaspore nastic phytopathology phytoplankton scutellum Sphenopsida stroma superior supernumerary trachea vein viviparous Nearby Words root ¹ root ² root ball root beer root canal root cellar root crop root directory root fly root hair root mean square root run root sign root vegetable root-bound root-knot rooter rootin'-tootin' rootkit