Definition of periscope
: a tubular optical instrument containing lenses and mirrors by which an observer obtains an otherwise obstructed field of view
Recent Examples of periscope from the Web
USS New Orleans: On March 20th, 2009 in the Strait of Hormuz the nuclear attack submarine USS Hartford collided with the amphibious transport USS New Orleans while at periscope depth.
Orvil Fluharty, a retired aircraft mechanic and RC hobbyist for more than 50 years, built the Spirit of St. Louis plane over eight years to scale and included a wicker seat and scale periscope.
At simple periscope depth, though, cracks begin to reveal themselves.
On February 7, 1943, the USS Wahoo sailed proudly into Pearl Harbor, a broom tied to her periscope.
For protection, though, the soldier faced a solid metal wall and had to use a periscope or telescope to see outside the tree.
While one man fired a machine gun through a hole, another used a short periscope to determine where the rounds were hitting.
Social media is my portal into the rest of the world — my periscope into the communities next to my community, into how the rest of the world thinks and feels.
There’s also an electro-optical periscope and an infrared camera mounted on the conning tower—
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'periscope'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of periscope
International Scientific Vocabulary
First Known Use: 1879See Words from the same year
PERISCOPE Defined for English Language Learners
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
Definition of periscope for Students
: an instrument containing lenses and mirrors by which a person (as on a submarine) can get a view that would otherwise be blocked
Seen and Heard
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