Look up: Ommatidium

1. ommatidium
   (= ommatidia (plural)) Single facet of an insect compound eye. Composed of a set of photoreceptor cells, overlain by a crystalline lens.
   Found on http://www.encyclo.co.uk/visitor-contrib
   
   
2. 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
   
   
3. ommatidium
   A single facet of an invertebrate compound eye. ... (18 Nov 1997) ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
4. ommatidium
   noun any of the numerous small cone-shaped eyes that make up the compound eyes of some arthropods
   Found on http://wordnetweb.princeton.edu/perl/web
   
   
5. Ommatidium
   • (n.) One of the single eyes forming the compound eyes of crustaceans, insects, and other invertebrates.
   Found on http://thinkexist.com/dictionary/meaning
   
   
6. 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
   
   
7. Ommatidium
   The compound eyes of insects, mantis shrimp and journal=Arthropod Structure & Development |volume=36 |issue=4 |pages=463–476 |doi=10.1016/j.asd.2007.09.002 |pmid=18089122-->--> are composed of units called `ommatidia` (singular: `ommatidium`). An ommatidium contains a cluster of photorece...
   Found on http://en.wikipedia.org/wiki/Ommatidium