cam·er·a

– noun
1. a boxlike device for holding a film or plate sensitive to light, having an aperture controlled by a shutter that, when opened, admits light enabling an object to be focused, usually by means of a lens, on the film or plate, thereby producing a photographic image.
2. the device in which the picture to be televised is formed before it is changed into electric impulses.
3. a judge's private office.

cam‧era lu‧ci‧da

1. an optical instrument, often attached to the eyepiece of a microscope, by which the image of an external object is projected on a sheet of paper or the like for tracing.

cam‧era ob‧scu‧ra

1. a darkened boxlike device in which images of external objects, received through an aperture, as with a convex lens, are exhibited in their natural colors on a surface arranged to receive them: used for sketching, exhibition purposes, etc.

pho·tog·ra·phy

1. the process or art of producing images of objects on sensitized surfaces by the chemical action of light or of other forms of radiant energy, as x-rays, gamma rays, or cosmic rays.