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balopticon

American  
[ba-lop-ti-kon, buh-] / bæˈlɒp tɪˌkɒn, bə- /

noun

  1. a type of stereopticon for projecting images of objects by reflected light.

Etymology

Origin of balopticon

Formerly trademark

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

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.