noun

periscope

PEH-rihs-kohp

noun

A tube-shaped viewing device with mirrors or prisms that lets someone see over or around an obstacle.

"The submarine crew raised the periscope to scan the surface."

verb

To raise up and look around cautiously, in the manner of a periscope.

"He periscoped over the fence to see who was there."

How to Use Periscope

Learner’s notes

In plain EnglishA device (classically on a submarine) that lets you see around a corner or above the surface without exposing yourself.

Common pairings

raise the periscope periscope depth

periscoped past tense, Periscoped past tense, periscopes plural, periscopes singular, Periscopes singular

Study it as flashcards or scroll it in Flow — saved to your collection.

Can you complete this real example?

The submarine crew raised the _____ to scan the surface.

Built in English from peri- ("around") + -scope ("instrument for viewing").

ope pope mope rope dope hope lope nope cope slope grope scope