- a type of simple eye common to invertebrates, consisting of retinal cells, pigments, and nerve fibers.
- an eyelike spot, as on a peacock feather.
Origin of ocellus
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for ocelli
Only ocelli, as these eyes are called, are found in the spider and his kind.Chatterbox, 1905.
These ocelli are frequently arranged in series on each side.
The female is paler and the ocelli are larger and more distinct than in charon.
Antenn longer than the head; or if shorter, then the eyes and ocelli absent.
Third segment of the antenna with five divisions; ocelli present.
- the simple eye of insects and some other invertebrates, consisting basically of light-sensitive cells
- any eyelike marking in animals, such as the eyespot on the tail feather of a peacock
- an enlarged discoloured cell in a leaf
- a swelling on the sporangium of certain fungi
C19: via New Latin from Latin: small eye, from oculus eye
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
- A small, simple eye or eyespot, found in many invertebrates.
- A marking that resembles an eye, as on the wings of some butterflies.
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