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See also: Periscope and périscope


English Wikipedia has an article on:
Naval officer using a periscope


From peri- +‎ -scope.


  • IPA(key): /ˈpɛɹɪskəʊp/
  • (file)


periscope (plural periscopes)

  1. A form of viewing device that allows the viewer to see things at a different height level and usually with minimal visibility.
  2. (obsolete): A general or comprehensive view.
    • 1885, Transactions of the Michigan State Medical Society[1], page 55:
      [] will show it not only enlarging the periscope of knowledge, but contributing to the amelioration of the condition of unfortunate and suffering humanity []

Related terms[edit]



periscope (third-person singular simple present periscopes, present participle periscoping, simple past and past participle periscoped)

  1. (intransitive) To rise and peer around, in the manner of a periscope.
    • 1951, National Geographic Magazine: Volume 99:
      Thousands of ungainly black-beaked heads would periscope and freeze in the direction of the approaching intruder.
    • 1987, Field & Stream March 1987:
      The second summer I had a great deal of interest but weeks passed before I worked up the nerve to approach her, the confidence finally gained when I caught a queen snake that periscoped within reach, one of the last I ever saw swimming in Cross Creek.
    • 2008, Doug Stamm, The Springs of Florida, page 99:
      Areas of barren sand are likely spots to look for its [the turtle's] periscoping head. Its fondness for the bottom is equally matched by its ability to quickly disappear and tunnel into it.
    • 2010, Jim Moran, The Sentinel: A Wildfire Story, page 236:
      Her black and white head suddenly popped out from under the covers and periscoped around.