• synonyms


noun Medicine/Medical.
  1. a slender, tubular optical instrument used as a viewing system for examining an inner part of the body and, with an attached instrument, for biopsy or surgery.
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Origin of endoscope

First recorded in 1860–65; endo- + -scope
Related formsen·do·scop·ic [en-duh-skop-ik] /ˌɛn dəˈskɒp ɪk/, adjectiveen·dos·co·pist [en-dos-kuh-pist] /ɛnˈdɒs kə pɪst/, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for endoscope


  1. a long slender medical instrument used for examining the interior of hollow organs including the lung, stomach, bladder, and bowel
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Derived Formsendoscopic (ˌɛndəʊˈskɒpɪk), adjectiveendoscopist (ɛnˈdɒskəpɪst), nounendoscopy, noun
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

endoscope in Medicine


  1. An instrument for examining visually the interior of a bodily canal or hollow organ such as the colon, bladder, or stomach.
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Related formsen′do•scopic (-skŏpĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

endoscope in Science


  1. A medical instrument used for visual examination of the interior of a body cavity or a hollow organ such as the colon, bladder, or stomach. It is a rigid or flexible tube fitted with lenses, a fiber-optic light source, and often a probe, forceps, suction device, or other apparatus for examination or retrieval of tissue.
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Related formsendoscopy noun (ĕn-dŏskə-pē)
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.