retroserrate vs serrate

retroserrate

adj
  • Having tooth-like projections pointed away from the apex. 

serrate

adj
  • Of leaves: having tooth-like projections pointed away from the petiole. 

  • Having tooth-like projections on one side, as in a saw. 

verb
  • To make serrate. 

  • To cut or divide in a jagged way. 

How often have the words retroserrate and serrate occurred in a corpus of books? (source: Google Ngram Viewer )