Definition of "lens" in English

noun

1. (optics) An object, usually made of glass, that focuses or defocuses the light that passes through it.

2. A device which focuses or defocuses electron beams.

3. (geometry) A convex shape bounded by two circular arcs, joined at their endpoints, the corresponding concave shape being a lune.

4. (biology) A genus of the legume family; its bean.

5. (anatomy) The transparent crystalline structure in the eye.

6. (earth science) A body of rock, ice, or water shaped like a convex lens.

7. (programming) A construct used in statically-typed functional programming languages to access nested data structures.

8. (by extension, figuratively) A way of looking, literally or figuratively, at something.

verb

1. (transitive, cinematography) To film, shoot.

2. (geology) To become thinner towards the edges.