Definition of Ommatidia. Meaning of Ommatidia. Synonyms of Ommatidia

Here you will find one or more explanations in English for the word Ommatidia. Also in the bottom left of the page several parts of wikipedia pages related to the word Ommatidia and, of course, Ommatidia synonyms and on the right images related to the word Ommatidia.

Definition of Ommatidia

Ommatidia
Ommatidium Om`ma*tid"i*um, n.; pl. Ommatidia. [NL., dim. of Gr. ?, ?, the eye.] (Zo["o]l.) One of the single eyes forming the compound eyes of crustaceans, insects, and other invertebrates.

Meaning of Ommatidia from wikipedia

- like insects, crustaceans and millipedes are composed of units called ommatidia (sg.: ommatidium). An ommatidium contains a cluster of photoreceptor cells...
- arthropods such as insects and crustaceans. It may consist of thousands of ommatidia, which are tiny independent photoreception units that consist of a cornea...
- photoreceptor units or ommatidia (ommatidium, singular). The image perceived is a combination of inputs from the numerous ommatidia (individual "eye units")...
- moves across the eye as the animal is rotated. This occurs because the ommatidia that one observes "head-on" (along their optical axes) absorb the incident...
- lineola has holoptic compound eyes, with the dorsal ommatidia larger than the ventral ommatidia In some male mayflies the eyes are split into separate...
- ocelli (ocellus in singular) and ommatidia of invertebrates have simple photoreceptors; many, including the ommatidia of most insects and the central eyes...
- size of the eyes of adult animals and have fewer ommatidia. Also, the facets of the frontal ommatidia, which are usually used for the detection of partners...
- prey. Compound eyes consist of fifteen to several thousand independent ommatidia, columns that are usually hexagonal in cross section. Each ommatidium...
- remnants of the borders between the ommatidia typically present in eyes evolved through fusion of the ommatidia, it is more likely that they developed...
- also been called Tetraconata, referring to having four cone cells in the ommatidia. This name is preferred by some scientists as a means of avoiding confusion...