Definition of Ommatidium

1. Noun. Any of the numerous small cone-shaped eyes that make up the compound eyes of some arthropods.

Generic synonyms: Ocellus, Simple Eye, Stemma
Group relationships: Compound Eye



Definition of Ommatidium

1. n. One of the single eyes forming the compound eyes of crustaceans, insects, and other invertebrates.

Definition of Ommatidium

1. Noun. (zoology) One of the conical substructures which make up the eyes of invertebrates. ¹

¹ Source: wiktionary.com

Definition of Ommatidium

1. [n -DIA]

Medical Definition of Ommatidium

1. A single facet of an invertebrate compound eye. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

Ommatidium Pictures

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Lexicographical Neighbors of Ommatidium

omittances
omitted
omitter
omitters
omitting
omkar
omkars
omlah
omlahs
ommastrephes
ommatea
ommateal
ommateum
ommatidia
ommatidial
ommatidium (current term)
ommatophore
ommatophores
ommaya reservoir
ommission
ommissions
ommochrome
ommochromes
omneities
omneity
omni-
omniana
omnianas
omniarch
omniarchs

Literary usage of Ommatidium

Below you will find example usage of this term as found in modern and/or classical literature:

1. Bulletin of the Museum of Comparative Zoology by Museum of Comparative Zoology, John E. Cadle, Harvard University (1891)
"As to the number of cells which constitute an ommatidium, it will be recalled that in the lobster there are at least sixteen in each ommatidium ; two in the ..."

2. Studies from the Biological Laboratory by Johns Hopkins University Biological Laboratory (1890)
"With these considerations in mind, I have sought for an ommatidium in which all the features of its structural elements may be made out plainly, ..."

3. Encyclopaedia Britannica, a Dictionary of Arts, Sciences, Literature and edited by Hugh Chisholm (1910)
"Each such unit is termed an " ommatidium. The lateral eyes of Scorpio consist ... The celts of the ommatidium arc a good deal larger than the neighbouring ..."

4. The Encyclopedia Britannica: A Dictionary of Arts, Sciences, Literature and by Hugh Chisholm (1910)
"Each such unit is termed an " ommatidium. The lateral eyes of Scorpio consist of groups of separate small lenses each with its ommatidium, but they do not ..."

5. An Introduction to Entomology by John Henry Comstock (1920)
"The distinctness of the vision of a compound eye depends also on the degree of isolation of the light received by each ommatidium, which is determined by ..."

6. The American Journal of Psychology by Granville Stanley Hall, Edward Bradford Titchener (1891)
"The paper opens with " a consideration of the ommatidium as the morphological unit of the compound eye in arthropods, just as each little circle of rods ..."

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