overhead projector

 

overhead projector (plural overhead projectors)

1. A projector that projects an image over the heads of the viewers onto a screen in front of them.

   Synonym: OHP

   • 1992 August 2, Peter H. Lewis, “Low-Tech Renewal”, in The New York Times‎^[1], →ISSN:

     The reality is that the typical classroom teacher still uses a blackboard and chalk. Indeed, despite the excitement over high-tech devices, most classroom equipment is decidedly low-tech: small-screen television sets, mimeograph machines, monaural phonograph record players, overhead projectors with grease pencils, 16-millimeter projectors, reel-to-reel tape players, filmstrip projectors.

• → German: Overheadprojektor (partial calque)

• document camera
• film projector
• slide projector

•   overhead projector on Wikipedia.Wikipedia