Noun

1. 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. A convex shape bounded by two circular arcs, joined at their endpoints, the corresponding concave shape being a lune.
4. A genus of the legume family; its bean.
5. The transparent crystalline structure in the eye.
6. A way of looking, literally or figuratively, at something.
   • 2004 April 11, Ann Hulbert, "Are the Kids All Right?", in The New York Times Magazine, page 11:

     If "the public looks at the condition of America's children largely through a negative lens," worries Child Trends, "it may be more difficult to promote child well-being."

Related terms

• contact lens
• lenticel
• lenticular
• lenticule
• lentil

Verb

1. To film, shoot.
2. To become thinner towards the edges.

Noun

Noun

1. optical lens
2. crystalline lens in the eye

Verb