Entomology definition of Cumulus September 7, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Cumulus Entomology definition of Cumulus: a group or heap; as of cells in a developing ovum. Cumulus Entomology explanationCumulus Entomology meaningEntomology Cumulus definitionReviews & Comments