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eyespot

[ahy-spot] /ˈaɪˌspɒt/
noun
1.
a sensory organ of lower animals, having a light-perceiving function.
2.
an eyelike spot, as on the tail of a peacock; eye.
3.
Plant Pathology. a disease of plants, characterized by elliptical lesions on the leaves and stems, stunting of growth, and rotting, caused by any of several fungi.
Origin
1580-1590
1580-90; eye + spot
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for eye-spot

eyespot

/ˈaɪˌspɒt/
noun
1.
a small area of light-sensitive pigment in some protozoans, algae, and other simple organisms
2.
an eyelike marking, as on the wings of certain butterflies
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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eye-spot in Science
eyespot
  (ī'spŏt')   
  1. An area that is sensitive to light and functions somewhat like an eye, found in certain single-celled organisms as well as many invertebrate animals.

  2. A round marking resembling an eye, as on the tail feather of a peacock.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Article for eye-spot

eyespot

a heavily pigmented region in certain one-celled organisms that apparently functions in light reception. The term is also applied to certain light-sensitive cells in the epidermis (skin) of some invertebrate animals (e.g., worms, starfishes).

Learn more about eyespot with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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