a. Bot. rare. [f. curvāt-, ppl. stem of curvāre: see -IVE.] See quots.
1856. Henslow, Dict. Bot. Terms, Curvative … in vernation and estivation, where the separate parts are scarcely folded but have the margins merely curved a little.
1866. Treas. Bot., 364. Curvative, when the margins are slightly turned up or down, without any sensible bending inwards.
