root hair defined in 1951 yearroot hair - root hair;
root hair - Tubular outgrowth of epidermal cell of root; with thin delicate wall having intimate contact with soil particles. Produced in large numbers behind region of active cell division at tip of root forming root-hair zone. Greatly increases absorbing surface of root. Short-lived, collapsing after few days but continually replaced from new root tissue formed by activity of apical meristem.
near root hair in Knolik
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