ocellus

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o·cel·lus

 (ō-sĕl′əs)
n. pl. o·cel·li (ō-sĕl′ī′)
1. A simple eye, found in many invertebrates, consisting of a number of sensory cells and often a single lens.
2. A marking that resembles an eye, as on the tail feathers of a male peacock; an eyespot.

[Latin, diminutive of oculus, eye; see okw- in Indo-European roots.]

o·cel′lar (ō-sĕl′ər) adj.

ocellus

(ɒˈsɛləs)
n, pl -li (-laɪ)
1. (Zoology) the simple eye of insects and some other invertebrates, consisting basically of light-sensitive cells
2. (Biology) any eyelike marking in animals, such as the eyespot on the tail feather of a peacock
3. (Botany) botany
a. an enlarged discoloured cell in a leaf
b. a swelling on the sporangium of certain fungi
[C19: via New Latin from Latin: small eye, from oculus eye]
oˈcellar adj
ocellate, ocellated adj
ˌocelˈlation n

o•cel•lus

(oʊˈsɛl əs)

n., pl. o•cel•li (oʊˈsɛl aɪ)
1. the simple eye of many invertebrates, consisting of retinal cells, pigments, and nerve fibers.
2. an eyelike spot, as on a peacock feather.
[1810–20; < Latin: little eye, diminutive of oculus eye; see -elle]
o•cel′lar, adj.
oc•el•lat•ed (ˈɒs əˌleɪ tɪd, oʊˈsɛl eɪ tɪd) oc•el•late (ˈɒs əˌleɪt, oʊˈsɛl ɪt, -eɪt) adj.

o·cel·lus

(ō-sĕl′əs)
Plural ocelli (ō-sĕl′ī′)
1. A small, simple eye or eyespot, found in many invertebrates.
2. A marking that resembles an eye, as on the wings of some butterflies.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.ocellus - an eye having a single lens
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
2.ocellus - an eyelike marking (as on the wings of some butterflies)ocellus - an eyelike marking (as on the wings of some butterflies); usually a spot of color inside a ring of another color
marking - a pattern of marks
Translations
References in classic literature ?
Smith has observed, the larger workers have simple eyes (ocelli), which though small can be plainly distinguished, whereas the smaller workers have their ocelli rudimentary.
Its two huge eyes extend in two vast oval patches from the centre of the top of the cranium down either side of the head to below the roots of the horns, so that these weapons really grow out from the lower part of the eyes, which are composed of several thousand ocelli each.
They extend in two vast, oval patches from the center of the top of the cranium down either side of the head to below the roots of the horns, so that these weapons really grow out from the lower part of the eyes, which are composed of several thousand ocelli each.
Head pronotum, scutellum, is dull ochraceous, thickly and densely punctured with dark brown tinge; eyes dark brown with outer border dull ochraceous; ocelli pale ochraceous; antennae brown; pronotum and scutellum streaked with dark and light stripes; apex of scutellum light brown, with few dark brown puncture; each segment of abdomen dark brown with middle portion light brown; membrane of hemelytra bright brown with dark veins; labium ochraceous except a little basal portion of 3rd and entire 4th segment are brown; legs ochraceous brown with dark patches.
For the purposes of this report, we define ocelli and eyes as follows (after Bok et al.
The team discovered that the ocelli contain two colour receptors which are perfectly tuned for sensing the colour of ambient light.
Ocellar III setae arising between posterior ocelli (white arrows) (adult Scirtothrips dorsalis).
Leaves with ocelli (scattered, in a row or 1-2 ocelli near leaf base) 17 16.
But the juvenile is bright white and boldly marked with orange and black ocelli.
The presence of pigment and ocelli distinguishes the Texas specimens from the cave-obligate species Miktoniscus racovitzai and Miktoniscus oklahomensis, the latter of which, recorded from Murray County, Oklahoma (Vendel, 1965), represents the nearest record for the genus.
A second specimen had 12 tentacles; although not visible in the image, ocelli were present in the living specimen (Fig.
Female) Head transverse; occiput straight, with rounded juxta-ocular elevations; ocelli minute in the female in broad triangle, facial scutellum transverse, eyes rounded.