vīvĭrādix, īcis, f. [vivus-radix],
a set or cutting having a root , a layer , quickset; of the vine, Cato R. R. 33, 4; Cic. Sen. 15, 52; Plin. 17, 22, 35, § 170; of the rose, Varr. R. R. 1, 35, 1.
vīvirādīx īcis, f vivus+radix, a rooted cutting, layer, quickset . ...
An Elementary Latin Dictionary