[ ster-ee-op-ti-kuh n, -kon, steer- ]
/ ˌstɛr iˈɒp tɪ kən, -ˌkɒn, ˌstɪər- /

noun Optics.

a projector usually consisting of two complete lanterns arranged so that one picture appears to dissolve while the next is forming.

Origin of stereopticon

1860–65, Americanism; stere(o)- + Greek optikón (neuter) optic

Related forms

ster·e·op·ti·can, adjectivester·e·op·ti·cian [ster-ee-op-tish-uh n, steer-] /ˌstɛr i ɒpˈtɪʃ ən, ˌstɪər-/, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for stereoptican


/ (ˌstɛrɪˈɒptɪkən, ˌstɪər-) /


a type of projector with two complete units arranged so that one picture dissolves as the next is forming

Word Origin for stereopticon

C19: from stereo- + Greek optikon, neuter form of optikos optic
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