- one of the radial elements composing a compound eye.
Origin of ommatidium
Examples from the Web for ommatidia
Historical Examples of ommatidia
These are in some genera like the single elements (ommatidia) of a compound insect eye, in others like simple ocelli.
It shows in Scorpio and Limulus a tendency to segregate into minor groups or “ommatidia.”
The compound eye of the king-crab (Limulus) is the only recognized instance of ommatidia in their simplest state.
Fenestrate membrane: of the compound eye is at the base of the ommatidia, at their junction with the optic nerve; see retina.Explanation of Terms Used in Entomology
John. B. Smith
The retinal portion is composed of a corresponding number of ocular units or ommatidia.
- any of the numerous cone-shaped units that make up the compound eyes of some arthropods
Word Origin for ommatidium
- One of the tiny light-sensitive parts of the compound eye of insects and other arthropods. An ommatidium resembles a single simplified eye. See more at compound eye.