eyespot

American  

[ahy-spot] / ˈaɪˌspɒt /

noun

1. a sensory organ of lower animals, having a light-perceiving function.

2. an eyelike spot, as on the tail of a peacock; eye.

3. Plant Pathology. a disease of plants, characterized by elliptical lesions on the leaves and stems, stunting of growth, and rotting, caused by any of several fungi.

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eyespot British  

/ ˈaɪˌspɒt /

noun

1. a small area of light-sensitive pigment in some protozoans, algae, and other simple organisms

2. an eyelike marking, as on the wings of certain butterflies

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eyespot Scientific  

/ ī′spŏt′ /

1. An area that is sensitive to light and functions somewhat like an eye, found in certain single-celled organisms as well as many invertebrate animals.

2. A round marking resembling an eye, as on the tail feather of a peacock.

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Etymology

Origin of eyespot

First recorded in 1580–90; eye + spot

Example Sentences

The 30-centimeter-long adult grows out of a larva that is little more than a sesame seed–size blob with an eyespot at one end and a band of cilia around its body.

From Science Magazine • Jan. 16, 2023

Yellow buntings are birds that feed on butterflies, including Aglaisurticae, a species of butterfly that has bright circular coloring on its wing called an eyespot.

From Textbooks • Jun. 9, 2022

Comparison of the number of birds attacking butterflies with and without eyespots suggests that the presence of an eyespot makes butterflies more visible to predators resulting in selection against the trait.

From Textbooks • Jun. 9, 2022

Some of the earliest renditions might have been a simple pit eye, a kind of pit of tissue lined with light receptors, or what scientists call an eyespot, a simple region that detects light.

From Scientific American • May 19, 2021

The `piece de resistance' of the back wing, is the eyespot.

From Moths of the Limberlost by Stratton-Porter, Gene