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ommatidia

Variant of ommatidium

noun pl. ommatidia

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.

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Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.

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