ocellus

[ oh-sel-uhs ]

/ oʊˈsɛl əs /

noun, plural o·cel·li [oh-sel-ahy]. /oʊˈsɛl aɪ/.

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

1810–20; <Latin: little eye, diminutive of oculuseye; see -elle

Words nearby ocellus

Oceanus Procellarum, ocellar, ocellated, ocellated turkey, ocellation, ocellus, ocelot, och, oche, ocher, ochlesis

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for ocellus

I will next describe the other extreme of the series, namely the first trace of an ocellus.
The Descent of Man and Selection in Relation to Sex|Charles Darwin
Ocellus: a simple eye, consisting of a single convex or bead-like lens, which conveys an image to a retina.
Explanation of Terms Used in Entomology|John. B. Smith
When the ocellus includes a lunular spot of a different colour.
An Introduction to Entomology: Vol. IV (of 4)|William Kirby
Occasionally specimens have a minute ocellus below the large one on the fore-wings.
New Zealand Moths and Butterflies|G. V. Hudson

Frontal lobes: in Psyllidae, two lobes or swellings more or less completely divided by a suture in which an ocellus is situated.
Explanation of Terms Used in Entomology|John. B. Smith

British Dictionary definitions for ocellus

ocellus

/ (ɒˈsɛləs) /

noun plural -li (-laɪ)

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

botany

an enlarged discoloured cell in a leaf
a swelling on the sporangium of certain fungi

Derived forms of ocellus

ocellar, adjectiveocellate (ˈɒsɪˌleɪt) or ocellated (ˈɒsɪˌleɪtɪd), adjectiveocellation, noun

Word Origin for ocellus

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

Scientific definitions for ocellus

ocellus

[ ō-sĕl′əs ]

Plural ocelli (ō-sĕl′ī′)

A small, simple eye or eyespot, found in many invertebrates.

A marking that resembles an eye, as on the wings of some butterflies.

单词	ocellus
释义	ocellus [ oh-sel-uhs ] / oʊˈsɛl əs / noun, plural o·cel·li [oh-sel-ahy]. /oʊˈsɛl aɪ/. 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 1810–20; <Latin: little eye, diminutive of oculuseye; see -elle Words nearby ocellus Oceanus Procellarum, ocellar, ocellated, ocellated turkey, ocellation, ocellus, ocelot, och, oche, ocher, ochlesis Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for ocellus I will next describe the other extreme of the series, namely the first trace of an ocellus. The Descent of Man and Selection in Relation to Sex\|Charles Darwin Ocellus: a simple eye, consisting of a single convex or bead-like lens, which conveys an image to a retina. Explanation of Terms Used in Entomology\|John. B. Smith When the ocellus includes a lunular spot of a different colour. An Introduction to Entomology: Vol. IV (of 4)\|William Kirby Occasionally specimens have a minute ocellus below the large one on the fore-wings. New Zealand Moths and Butterflies\|G. V. Hudson Frontal lobes: in Psyllidae, two lobes or swellings more or less completely divided by a suture in which an ocellus is situated. Explanation of Terms Used in Entomology\|John. B. Smith British Dictionary definitions for ocellus ocellus / (ɒˈsɛləs) / noun plural -li (-laɪ) 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 botany an enlarged discoloured cell in a leaf a swelling on the sporangium of certain fungi Derived forms of ocellus ocellar, adjectiveocellate (ˈɒsɪˌleɪt) or ocellated (ˈɒsɪˌleɪtɪd), adjectiveocellation, noun Word Origin for ocellus 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 Scientific definitions for ocellus ocellus [ ō-sĕl′əs ] Plural ocelli (ō-sĕl′ī′) A small, simple eye or eyespot, found in many invertebrates. A marking that resembles an eye, as on the wings of some butterflies. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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