(definition) by Webster 1913 Wed Dec 22 1999 at 1:34:36

Om`ma*tid"i*um (?), n.; pl. Ommatidia (#). [NL., dim. of Gr. , , the eye.] Zool.

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

 

© Webster 1913.

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