Entomology definition of Cyaneous September 7, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Cyaneous Entomology definition of Cyaneous: pure dark blue: indigo blue [French blue]. Cyaneous Entomology explanationCyaneous Entomology meaningEntomology Cyaneous definitionReviews & Comments