Definify.com
Webster 1913 Edition
Ommatidium
‖
Omˊma-tid′i-um
,Noun.
pl.
Ommatidia
(#)
. [NL., dim. of Gr. [GREEK], [GREEK], the eye.]
(Zool.)
One of the single eyes forming the compound eyes of crustaceans, insects, and other invertebrates; one of the eyes of an
ommateum
. Definition 2025
ommatidium
ommatidium
English
Noun
ommatidium (plural ommatidia)
- (zoology) One of the conical substructures which make up the eyes of invertebrates.
- 1996: the ‘compound’ eyes of insects [...] are made up of large numbers of facets or ommatidia, and in this sense, our own eyes are ‘simple’. — Michael J. Roberts, Spiders of Britain and Northern Europe (Collins 1996, p. 12)
Translations
Latin
Pronunciation
- (Classical) IPA(key): /om.maˈti.di.um/, [ɔm.maˈtɪ.di.ũ]
Noun
ommatidium n (genitive ommatidiī); second declension
Inflection
Second declension.
| Case | Singular | Plural |
|---|---|---|
| nominative | ommatidium | ommatidia |
| genitive | ommatidiī | ommatidiōrum |
| dative | ommatidiō | ommatidiīs |
| accusative | ommatidium | ommatidia |
| ablative | ommatidiō | ommatidiīs |
| vocative | ommatidium | ommatidia |