ommatidium Hear it!

ommatidium definition

om·ma·tid·ium (äm′ə tid′ē əm)

noun pl. ommatidia -·ia

any of the structuralelements forming the compound eye of an insect, many crustaceans, etc.: each element is a complete photoreceptor in itself, having a lens, pigment, light-sensitive cells, etc.

Etymology: ModL, dim. < Gr omma (gen. ommatos), the eye, akin to ōps, eye

Related Forms:

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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