From Wiktionary, the free dictionary
serrulation (countable and uncountable, plural serrulations)
- The state of being notched minutely, like a fine saw.
1821, William Paul Crillon Barton, A Flora of North America:The margin […] in the older leaves […] marked by about four serratiform indentures, scarcely deserving the appellation of serrulations.
- One of the teeth in a serrulate margin.
