Bible Dictionaries
Ommatidium

Webster's Dictionary

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

Bibliography Information
Webster, Noah. Entry for 'Ommatidium'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​o/ommatidium.html. 1828.