Definition of ocellus in English:

ocellus

Line breaks: ocel|lus
Pronunciation: /əˈsɛləs
 
/

noun (plural ocelli /-lʌɪ, -liː/)

Zoology
  • 1 another term for simple eye.
    More example sentences
    • Between the compound eyes are usually three simple eye, or ocelli.
    • The ocelli, or eye spots, may reduce damage from fin-biting predators by mimicking the head.
    • The expression in adults was observed in dorsal ocelli cells in the nerve code.
  • 2 another term for eyespot ( sense 1), eyespot ( sense 2).
    More example sentences
    • Besides functioning as an identification feature, the ocelli also have anti-predator functions.
    • They suggested that the color change is stimulated by perception of the background color by the larval ocelli and effected by a neurophysiological pathway.
    • Transverse cuticular wrinkles arranged in a tight parallel pattern form a ring posterior to the ocelli and encircle about 25% of the cephalothorax.

Derivatives

ocellar

adjective
More example sentences
  • Adjacent to these lie the two ocellar bristles and the two postvertical bristles in addition to several microchaetae.
  • During a 14-wk interval, a new postocellar region was regenerated while the anteriormost ocellar region degenerated.
  • Neuronal hyperplasia is observed in mutant clones located behind the MF (white arrows) or in the ocellar precursor region (red arrows).

Origin

early 19th century: from Latin, diminutive of oculus 'eye'.

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