Meaning of LENS in English

LENS

■ noun

1》 a piece of glass or other transparent material with one or both sides curved for concentrating or dispersing light rays.

↘ Anatomy the transparent elastic structure behind the iris by which light is focused on to the retina of the eye.

↘short for contact ~ .

2》 the light-gathering device of a camera, containing a group of compound ~es.

3》 Physics an object or device which focuses or otherwise modifies a beam of radiation, sound, electrons, etc.

Derivatives

~ed adjective

~less adjective

Origin

C17: from L., 'lentil' (because of the similarity in shape).

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.