periscope

views updated Jun 11 2018

per·i·scope / ˈperəˌskōp/ • n. an apparatus consisting of a tube attached to a set of mirrors or prisms, by which an observer (typically in a submerged submarine or behind a high obstacle) can see things that are otherwise out of sight.

periscope

The Oxford Pocket Dictionary of Current English

periscope

views updated May 18 2018

periscope Optical instrument consisting of a series of mirrors or prisms that allows a person to view the surroundings from a concealed position by changing the direction of the observer's line of sight. Since World War I, the periscope has been most commonly associated with submarines.

World Encyclopedia

periscope

views updated May 23 2018

periscope XIX. f. PERI- + SCOPE.

The Concise Oxford Dictionary of English Etymology T. F. HOAD

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