lens
/lɛnz/ noun B1- An object, usually made of glass, that focuses or defocuses the light that passes through it.
- A device which focuses or defocuses other waves or radiation, such as microwave radiation, electron beams, sound waves (acoustic lenses), or explosions (explosive lenses).
- A convex shape bounded by two circular arcs, joined at their endpoints, the corresponding concave shape being a lune.
- The transparent crystalline structure in the eye.
- A body of rock, ice, or water shaped like a convex lens.
- A convex layer of fresh groundwater that floats above the denser saltwater, usually found on small coral or limestone islands and atolls.
- A construct used in statically-typed functional programming languages to access nested data structures.
- A way of looking, literally or figuratively, at something.
Plural lenses
From the library
I could not make it out when first I saw the light flashing upon the lens.” He rose and peeped into the hut.
You will excuse me for a few minutes while I satisfy myself as to this floor.” He threw himself down upon his face with his lens in his hand and crawled swiftly backward and forward, examining minutely the cracks between the boards.
That is quite settled,” said he, rising and putting his lens in his pocket.
Then with an expression of interest he laid down his cigarette, and carrying the cane to the window, he looked over it again with a convex lens.
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