having the margin notched or scalloped so as to form rounded teeth, as a leaf.
Also, cre⋅nat⋅ed.
Origin: 1785–95; < NL crēnātus, equiv. to L crēn(a) a notch, serration (a word occurring in some manuscripts of Pliny, identified with a semantically related set of Rom words; see crenel) + -ātus-ate1
(click for larger image in new window) adj. Having a margin with low, rounded or scalloped projections: a crenate leaf.
[New Latin crēnātus, from Late Medieval Latin crēna, notch, from a reading of an uncertain Latin word in a corrupt passage in Pliny the Elder (influenced by Old French cren, notch).] cre'nate'ly adv.