compound eye


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compound eye

n.
The eye of most insects and some crustaceans, which is composed of many light-sensitive elements, each having its own refractive system and each forming a portion of an image.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

compound eye

n
(Zoology) the convex eye of insects and some crustaceans, consisting of numerous separate light-sensitive units (ommatidia). See also ocellus
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

com′pound eye′


n.
an eye, typical of insects, composed of many individual light-sensitive units that form a mosaic of images on the retina.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

compound eye

An eye, as of an insect or crustacean, consisting of hundreds or thousands of tiny light-sensitive parts, with each part creating a portion of an image.
Did You Know? The eyes have it—the important ability to see, that is. But not all eyes are created equal. Insects and other arthropods (which include lobsters and other crustaceans) have compound eyes, which are quite different from ours. The compound eye, greatly magnified, looks like a fencer's mask. It consists of many repeating units, called ommatidia, each of which is a separate light receptor. Some species' eyes have many ommatidia while others have only a few—the more ommatidia an eye has, the better it can resolve images. But even with many ommatidia, the typical compound eye is poor compared with ours at creating a sharp image. A honeybee, for example, sees only one-sixtieth as clearly as we do. However, the compound eye has other special talents. It is excellent at detecting motion, as the moving object passes from one ommatidium to the next. And some insects see ultraviolet light, which is invisible to us.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.compound eye - in insects and some crustaceans: composed of many light-sensitive elements each forming a portion of an image
eye, oculus, optic - the organ of sight
ommatidium - any of the numerous small cone-shaped eyes that make up the compound eyes of some arthropods
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in classic literature ?
In the second stage, answering to the chrysalis stage of butterflies, they have six pairs of beautifully constructed natatory legs, a pair of magnificent compound eyes, and extremely complex antennae; but they have a closed and imperfect mouth, and cannot feed: their function at this stage is, to search by their well-developed organs of sense, and to reach by their active powers of swimming, a proper place on which to become attached and to undergo their final metamorphosis.
Then stared, and they all stared, balefully, as if through a compound eye, hoping to drive him off.
2a); intertorular distance 2.0x OD, about as long as torulorbital distance; torulus diameter 0.8x OD; ocellocular distance 2.1x greater than ocelloccipital distance; interocellar distance 1.5x OD; compound eye 2.3x longer than wide; gena about as wide as compound eye in profile; supraclypeal area, as seen in profile, on the same level with clypeus; facial fovea 5.0x longer than broad, 0.3x length of scape; scape 2.1x longer than broad; F1 1.6x longer than broad, about 1.6x longer than F2 and F3 individually.
The nostalgia turns strange, though, when rearranged in this fragmented form--as if the memory had been captured by the compound eye of a bug.
You could say that the entire sea urchin is one single compound eye", said John Kirwan, who conducted the study as a part of his doctoral thesis.
Reports on structural localization of AChE activity in the compound eye of the honey bee are also presented by Kral and Schneider (1981).
The first part gives a description of the extracted and the compound eye and brain models, respectively.
Mantis shrimp Each clear outer facet of this compound eye sends light to a single photosensitive structure.
Taxonomic Key to Copicerus Species 1.--Frons with 2 black transverse bands (or large dark patches), contrasted with tan or pale brown at frontoclypeal suture and between black bands (at lower margin of compound eye); mesothorax tan medially, dark brown laterally Copicerus swartzi Stal 1'.--Frons variously brown speckled or dark dorsally and paler ventrally; mesothorax varied 2 2.--Prothorax often speckled brown and slightly to distinctly darker laterally; mesothorax bicolored, pale medially, darker laterally; frons variously speckled (sparsely to densely) C.
There is a protocerebrum, connecting to the compound eye and other frontal filaments and organs, a deuto- and trito-cerebrum, which receive input from antennae and a ventral nerve cord ganglial network.
n of right antenna, IO, D and d: minimum distance between compound eyes, antero-posterior diameter and transverse diameter of right compound eye, respectively, on dorsal view of head, PO: d/D.