Optics. (of certain lenses in special microscopes, cameras, etc.) giving distinct vision obliquely, or all around, as well as, or instead of, in a direct line.
pertaining to periscopes or their use.

Sometimes per·i·scop·i·cal.

Origin of periscopic

1795–1805; < Greek periskop(eîn) to look about (see peri-, -scope) + -ic Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for periscopic

Historical Examples of periscopic

  • Mr. Shelton, do you know anything about these periscopic binoculars?

    The Island Pharisees

    John Galsworthy

  • Russ leaped from the chair and raced to the periscopic mirror.


    Clifford Donald Simak

  • A very useful form of lens was proposed by Dr. Wollaston, and called by him the Periscopic lens.

    The Microscope

    Andrew Ross

  • A pair of lenses thus equipped Dr. Wollaston called the periscopic microscope.

  • The periscopic gun sight and the controls were on a level with the operator's eyes.

    The Airlords of Han

    Philip Francis Nowlan

British Dictionary definitions for periscopic



(of a lens) having a wide field of view
Derived Formsperiscopically, adverb
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

periscopic in Medicine




Of, relating to, or permitting the observation of objects from positions in or out of the direct line of sight.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.