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ocellus
[ oh-sel-uhs ]
noun
- a type of simple eye common to invertebrates, consisting of retinal cells, pigments, and nerve fibers.
- an eyelike spot, as on a peacock feather.
ocellus
/ ˈɒsɪˌleɪtɪd; ˈɒsɪˌleɪt; ɒˈsɛləs /
noun
- 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
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.
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Derived Forms
- ˌocelˈlation, noun
- oˈcellar, adjective
- ocellate, adjective
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Word History and Origins
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Word History and Origins
Origin of ocellus1
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Example Sentences
Stem′let, a little or young stem; Stem′ma, a pedigree or family tree: an ocellus.
Diameter of ocellus: Maximal outside diameter of largest (not conspicuously ovoid or oblong) ocellus on carapace.
So that the ancestry of the name runs thus:—Ocellus—œillet—Willy—William.
The usual markings occur, but there is no eye-spot, or ocellus, on the primaries.
An ocellus with a smaller near it, called also Sesquiocellus.
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