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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
.