from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A projector that projects onto a screen or surface the image on a transparency placed over the projector's light source, with the image redirected by an overhead mirror.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A projector that projects an image over the heads of the viewers onto a screen in front of them
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a projector operated by a speaker; projects the image over the speaker's head
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