"condition of being serrated, formation in the shape of the edge of a saw," 1808, noun of state from serrate (v.), for which see serrate (adj.).
Entries linking to serration
serrate adj.
"notched on the edge like a saw," 1660s, from Latin serratus "sawlike, notched like a saw," from serra "a saw" (also a name of a type of serrated battle formation), a word of unknown origin. De Vaan suggests a connection to Latin sario 'to hoe, weed," and a PIE source in *sers- "cutting off." Related: Serrated; serrating.