crenato-|kriːˈneɪtəʊ|combining form of mod.L. crēnātus crenate; crenately, crenate-.1845Lindley Sch.Bot. vii. (1858) 124 Leaves..doubly and evenly crenato-serrate.1846Dana Zooph. (1848) 304 It is represented as crenato-denticulate [= crenately-toothed].1866Treas.Bot. 346 Crenato-serrate, when serratures are convex, and not straight.