View synonyms for periscope

periscope

[ per-uh-skohp ]

Phonetic (Standard)IPA

noun

an optical instrument for viewing objects that are above the level of direct sight or in an otherwise obstructed field of vision, consisting essentially of a tube with an arrangement of prisms or mirrors and, usually, lenses: used especially in submarines.
a periscopic lens.

periscope

/ ˈpɛrɪˌskəʊp /

any of a number of optical instruments that enable the user to view objects that are not in the direct line of vision, such as one in a submarine for looking above the surface of the water. They have a system of mirrors or prisms to reflect the light and often contain focusing lenses

periscope

/ pĕr′ĭ-skōp′ /

An instrument that has angled mirrors or prisms and allows objects not in the direct line of sight to be seen, often used on submarines and in military reconnaissance.

First recorded in 1815–25; back formation from periscopic

C19: from Greek periskopein to look around; see peri- , -scope

In my case, it probably would be “Down periscope”—after accidentally ramming some Greenpeace research vessel.

There was no shelling at the moment, but rifle bullets kept flopping into the parapet especially when the periscope was moved.

Every hundred yards or so I had a close peep at the ground in front through de Lisle's periscope.

The periscope is the one part of the submarine scout equipment that is open to vision from the surface.

Curiously the others crowded about the object glass of the periscope.

And just then the Weathercock shouted something which sounded very much like "Periscope!"

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