The Collaborative International Dictionary
Curvative
Curvative \Cur"va*tive\ (k?r"v?-t?v), a. (Bot.)
Having the margins only a little curved; -- said of leaves.
--Henslow.
Wiktionary
curvative
a. (context botany English) Having the margins only a little curved; said of leaf. n. (context geometry English) (rfdef: English)