ommatidium

(= ommatidia (plural)) Single facet of an insect compound eye. Composed of a set of photoreceptor cells, overlain by a crystalline lens.

Ommatidium

The compound eyes of arthropods like insects, crustaceans and millipedes are composed of units called ommatidia (singular: ommatidium). An ommatidium contains a cluster of photoreceptor cells surrounded by support cells and pigment cells. The outer part of the ommatidium is overlaid with a transparent cornea. Each ommatidium is innervated by one a...
Found on http://en.wikipedia.org/wiki/Ommatidium

Ommatidium

• (n.) One of the single eyes forming the compound eyes of crustaceans, insects, and other invertebrates.
Found on http://thinkexist.com/dictionary/meaning/ommatidium/

ommatidium

(from the article `insect`) ...rays from a small area of the field of view fall on a single facet and are concentrated upon the rhabdom of the retinula cells below. Since each ... ...compound eyes are found only in the arthropods, however. The compound eye of insects is composed of hexagonal or rectangular-shaped, closely ... The env...
Found on http://www.britannica.com/eb/a-z/o/17

Ommatidium

(pl., ommatidia)
Found on http://www.earthlife.net/insects/glossary.html

ommatidium

noun any of the numerous small cone-shaped eyes that make up the compound eyes of some arthropods
Found on https://www.encyclo.co.uk/local/20974

Ommatidium

Om`ma·tid'i·um noun ; plural Ommatidia . [ New Latin , dim. of Greek ..., ..., the eye.] (Zoology) One of the single eyes forming the compound eyes of crustaceans, insects, and other invertebrates.
Found on http://www.encyclo.co.uk/webster/O/18

ommatidium

A single facet of an invertebrate compound eye. ... (18 Nov 1997) ...
Found on http://www.encyclo.co.uk/local/20973

ommatidium

one of the single eyes forming the compound eyes of crustaceans, insects, and other invertebrates
Found on http://www.kerbtier.de/Pages/Glossar/enGlossar.html
No exact match found