ocellus

A noun referring to a simple eye with a single lens, or an eyelike marking, such as a colored spot surrounded by a ring, found on the wings of some butterflies.

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1. Simple eye C2 formal scientific

   A small, simple eye found in some invertebrates, consisting of a single lens and capable of detecting light intensity and direction.

   • Many insects have ocelli on the top of their heads to sense light.
   • The ocellus of a spider is less complex than its main eyes.
   • Scientists studied the ocellus to understand primitive vision.

   🌐عين بسيطة

   المرادفات: eyespotsimple eye

2. Eyespot marking C2 formal scientific

   A circular, eyelike marking on the wings of some insects, such as butterflies, often used to deter predators.

   • The peacock butterfly has a prominent ocellus on each wing.
   • The ocellus on the moth's wing resembles an eye to scare birds.
   • These ocelli are often brightly colored with a dark center.

   🌐بقعة عينية

   المرادفات: eyespot

• ocelli plural form
• ocelli's possessive plural form
• ocellus's possessive singular form