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
definition of word "root hair" was readed 1300 times