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ommatidia

 - 3 dictionary results

om⋅ma⋅tid⋅i⋅um

  [om-uh-tid-ee-uhm]
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–noun, plural -tid⋅i⋅a  [-tid-ee-uh] . Zoology.
one of the radial elements composing a compound eye.
Origin:
1880–85; < NL < Gk ommat- (s. of ómma eye) + NL -idium -idium

Related forms:
om⋅ma⋅tid⋅i⋅al, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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om·ma·tid·i·um   (ŏm'ə-tĭd'ē-əm)   
n.   pl. om·ma·tid·i·a (-ē-ə)
One of the structural elements, resembling a single simplified eye, that make up the compound eye of insects and other arthropods.

[New Latin, diminutive of Greek omma, ommat-, eye; see okw- in Indo-European roots.]
om'ma·tid'i·al (-ē-əl) adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Science Dictionary
ommatidium   (ŏm'ə-tĭd'ē-əm)  Pronunciation Key 
Plural ommatidia
One of the tiny light-sensitive parts of the compound eye of insects and other arthropods. An ommatidium resembles a single simplified eye. See more at compound eye.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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