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[pruh-jek-ter] /prəˈdʒɛk tər/
an apparatus for throwing an image on a screen, as a motion-picture projector or magic lantern.
a device for projecting a beam of light.
a person who forms projects or plans; schemer.
1590-1600; project + -or2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for projector
  • Up to this day it must be owned no projector has had the smallest success.
  • There's no reason they won't have a video camera located in a buttonhole, maybe even a video projector.
  • They have dozens of faces on the main projector screen.
  • On one side of the cylindrical chamber, about halfway down its length, is a halogen movie-projector lamp.
  • They crouched behind anything they could find, even an overhead projector.
  • As he talked, he showed snippets of film, sometimes with the sound off and sometimes run backward through the projector.
  • If she showed any more, the projector might catch fire.
  • projector alignment is usually the first session given.
  • Also available at the lodge is a screen with a projector, and an easel.
  • It is imperative that you do not shut off power to the projector prematurely, as this will damage the equipment.
British Dictionary definitions for projector


an optical instrument that projects an enlarged image of individual slides onto a screen or wall Full name slide projector
an optical instrument in which a strip of film is wound past a lens at a fixed speed so that the frames can be viewed as a continuously moving sequence on a screen or wall Full name film projector, cine projector
a device for projecting a light beam
a person who devises projects
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for projector

1590s, "one who forms a project," agent noun in Latin form from project (v.). In the optical, camera sense it is from 1884.

Online Etymology Dictionary, © 2010 Douglas Harper
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Encyclopedia Article for projector

device for transferring photographic and other images in an enlarged form onto a viewing screen. All types of projectors employ a light source and a lens system. A simple still-photo or slide projector for exhibiting transparencies has two sets of lenses, one between the light source and the transparency, to concentrate the light, and one in front of the transparency, to focus the picture on the screen and enlarge the image. Another type of still projector has the light source positioned in front of the picture so that the image is formed by light reflected from the picture; this produces a dimmer image but is necessary for the exhibition of opaque pictures-i.e., printed photographs and illustrations from books and magazines.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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