plural lenses
1
: a clear curved piece of glass or plastic that is used in eyeglasses, cameras, telescopes, etc., to make things look clearer, smaller, or bigger
glasses with thick lenses
a camera lens
Make sure the lens of the microscope is clean.
2
: the clear part of the eye that focuses light to form clear images
Cite this Entry
“Lens.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/lens. Accessed 21 Jun. 2026.
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