[a. F. cornéule, dim. of cornée cornea.] One of the minute facets of the compound eyes of insects; = CORNEOLE.
1839. Todd, Cycl. Anat., II. 960/1. Each facet, or … corneule, is the proper cornea of a distinct eye. Ibid. Immediately behind each corneule is a layer of dark-coloured pigment.
