periscope

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noun peri·scope \ˈper-ə-ˌskōp\

Definition of periscope

  1. :  a tubular optical instrument containing lenses and mirrors by which an observer obtains an otherwise obstructed field of view

Illustration of periscope

Origin and Etymology of periscope

International Scientific Vocabulary


First Known Use: 1879

Other Nautical Terms


PERISCOPE Defined for English Language Learners

periscope

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noun peri·scope \ˈper-ə-ˌskōp\

Definition of periscope for English Language Learners

  • : a long tube that contains lenses and mirrors and that is used to look over or around something and especially by a person in a submarine to see above the surface of the water


PERISCOPE Defined for Kids

periscope

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noun peri·scope \ˈper-ə-ˌskōp\

Definition of periscope for Students

  1. :  an instrument containing lenses and mirrors by which a person (as on a submarine) can get a view that would otherwise be blocked


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