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Meaning of lens
The primary meaning of the word "lens" is a transparent, curved piece of glass or plastic used to focus light, as in a pair of glasses, camera, or microscope.
Etymology of lens
The word "lens" comes from the Latin "lens", meaning "lentil", due to the resemblance in shape between a lentil and a double-convex lens.
The Latin "lens" is derived from the verb "lent-", which is also the source of the English word "lentil".
The word "lens" has been used in English since the 17th century to refer to a transparent, curved piece of glass or plastic used to focus light.
Synonyms
Definitions
- A transparent, curved piece of glass or plastic used to focus light, as in a pair of glasses, camera, or microscope.
- * A device that focuses or spreads out electromagnetic radiation, such as a lens in a telescope or a microwave lens.
- * A part of the eye that changes shape to focus on objects at different distances.
Usage Examples
- She put on her glasses, which had a new lens to correct her nearsightedness.
- * The camera lens was dirty, so the photographer had to clean it before taking the picture.
- * The microscope used a special lens to magnify the tiny cells.