eyepiece

noun

eye·​piece ˈī-ˌpēs 

: the lens or combination of lenses at the eye end of an optical instrument

Examples of eyepiece in a Sentence

Recent Examples on the Web

As before, budding stargazers don't get closer to galaxies and nebulae through an eyepiece, that sort of thing is handled by the smart part of this equation. —New Atlas, 21 Nov. 2025

Avoid using high-power eyepieces at first, as their field of views are tiny and the images are not as sharp as using low powers. —Anthony Wood, Space.com, 15 Nov. 2025

His mask is damaged in the fall, one red-tinged eyepiece popped from the frame. —Dalton Ross, Entertainment Weekly, 22 Oct. 2025

What Lowell probably saw was a projection of his own retina’s blood vessels onto the eyepiece of his telescope. —David Kamp, Air Mail, 23 Aug. 2025

Word History

First Known Use

1729, in the meaning defined above

Rhymes for eyepiece

• altarpiece
• centerpiece
• frontispiece
• mantelpiece
• masterpiece
• pilates
• summarise
• syntheses
• apiece
• aris
• assise
• caprice

Kids Definition

eyepiece

noun

eye·​piece ˈī-ˌpēs 

: the lens or combination of lenses at the eye end of an optical instrument (as a microscope or telescope)

Medical Definition

eyepiece

noun

eye·​piece ˈī-ˌpēs 

: the lens or combination of lenses at the eye end of an optical instrument

called also ocular