lens
An object, usually made of glass, that focuses or defocuses the light that passes through it.
Other meanings
A device which focuses or defocuses other waves or radiation, such as microwave radiation, electron beams, sound waves (), or explosions ().
A convex shape bounded by two circular arcs, joined at their endpoints, the corresponding concave shape being a lune.
Related words
- contact lens
- corrective lens
- corrugated lens
- fisheye lens
- gravitational lens
- lens brush
- lens louse
- lenticel
- lenticular
- lenticule
- lentil
- long lens
Example sentences
Word history
From Latin "lēns" (lentil).
Where this comes from
This definition is adapted from “lens” on Wiktionary, by its contributors; example sentences are from Tatoeba, credited to their authors above, published under CC BY-SA 4.0. This page is published under the same licence.