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Definition of Root hair
1. Noun. Thin hairlike outgrowth of an epidermal cell just behind the tip; absorbs nutrients from the soil.
Definition of Root hair
1. Noun. (biology) The rhizoid of a vascular plant; a tubular outgrowth of a trichoblast, a hair-forming cell on the epidermis of a plant root. ¹
¹ Source: wiktionary.com