overhead projector

British

noun

a projector that throws an enlarged image of a transparency onto a surface above and behind the person using it. Alterations and additions can be made to the material on the transparency while the projector is in use

"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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overhead projector

Each section fills out the fuller picture as though Cregger is layering transparencies on top of an overhead projector.

From Los Angeles Times ● Aug. 7, 2025

The war cabinet room has an overhead projector and four television sets.

From New York Times ● Jan. 25, 2023

A stranger in a lab coat lectured at us using an overhead projector.

From Salon ● Sep. 5, 2021

Meanwhile, other actors posted notes on a board upstage and quickly flipped through images on an overhead projector to illustrate the text.

From Seattle Times ● Feb. 18, 2017

He uses the overhead projector to put up the 1st 3 questions.

From "The Miscalculations of Lightning Girl" by Stacy McAnulty

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023