Meaning of LENS in English

LENS

n.1 a piece of a transparent substance with one or (usu.) both sides curved for concentrating or dispersing light-rays esp. in optical instruments.

2 a combination of lenses used in photography.

3 Anat. crystalline lens.

4 Physics a device for focusing or otherwise modifying the direction of movement of light, sound, electrons, etc.

Derivatives:

lensed adj. lensless adj.

Etymology: L lens lentis lentil (from the similarity of shape)

Oxford English vocab.      Оксфордский английский словарь.