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overhead projector - 2 dictionary results

o⋅ver⋅head

[adv. oh-ver-hed; adj., n. oh-ver-hed]
–adverb
1. over one's head; aloft; up in the air or sky, esp. near the zenith: There was a cloud overhead.
2. so as to be completely submerged or deeply involved: to plunge overhead in water; to sink overhead in debt.
–adjective
3. situated, operating, or passing above, aloft, or over the head: an overhead sprinkler system.
4. of or pertaining to the general cost of running a business: overhead expenses; an overhead charge.
–noun
5. the general, fixed cost of running a business, as rent, lighting, and heating expenses, which cannot be charged or attributed to a specific product or part of the work operation.
6. Accounting. that part of manufacturing costs for which cost per unit produced is not readily assignable.
7. (in a hoistway) the distance between the last floor level served and the beam supporting the hoisting sheaves or machinery.
8. (in racket sports) a stroke in which the ball or shuttlecock is hit with a downward motion from above the head; smash.
9. an overhead compartment, shelf, etc.: Pillows are in the overhead above each passenger's seat.
10. Also called overhead shot. Movies, Television. a shot in which the camera is positioned above the actors, esp. directly overhead.
11. a ceiling light in a room: Turn off the overheads when you leave.
12. Also called overhead projector. a projector capable of projecting images above and behind the person operating it, thus allowing a lecturer or speaker to remain facing the audience while using it.
13. Also called overhead projection. a picture or image projected in this manner: a lecture enhanced with overheads.

Origin:
1425–75; late ME; see over-, head
overhead projector  
n.  A projector capable of projecting enlarged images of written or pictorial material onto a screen or wall from a transparency placed horizontally below the projector and lighted from underneath.
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