An object, usually made of glass, that focuses or defocuses the light that passes through it.
A genus of the legume family; its bean.
The transparent crystalline structure in the eye.
A construct used in statically-typed functional programming languages to access nested data structures.
A convex shape bounded by two circular arcs, joined at their endpoints, the corresponding concave shape being a lune.
A device which focuses or defocuses electron beams.
A way of looking, literally or figuratively, at something.
A body of rock, ice, or water shaped like a convex lens.
To film, shoot.
To become thinner towards the edges.
An optical instrument used for observing small objects.
Any instrument for imaging very small objects (such as an electron microscope).
To examine with a microscope, to put under a microscope (literally or figuratively).