canescent

adjective

ca·​nes·​cent kə-ˈne-sᵊnt 

ka-

: growing white, whitish, or hoary

especially : having a fine grayish-white pubescence

canescent leaves

Word History

Etymology

Latin canescent-, canescens, present participle of canescere, inchoative of canēre to be gray, be white, from canus white, hoary — more at hare

First Known Use

circa 1775, in the meaning defined above