The past tense of Serrate is serrated.
adjective. ['ˈsɛˌreɪt'] notched like a saw with teeth pointing toward the apex.
1. Verb, base form Dentate margins point outward, and serrate point toward the tip of the leaf. 2. Noun, singular or mass Red mulberry leaves have serrate margins with as many as four clefts.
verb. ['ˈsɛˌreɪt'] make saw-toothed or jag the edge of.