Definition of ocellus in English:


Line breaks: ocel|lus
Pronunciation: /əˈsɛləs

noun (plural ocelli /-lʌɪ, -liː/)

  • 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.



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).


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

More definitions of ocellus

Definition of ocellus in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day kerf
Pronunciation: kəːf
a slit made by cutting with a saw