Pronunciation: /ˈpɛrəˌskoʊp/
noun a tube or optical instrument with mirrors and lenses for viewing objects that are not in the direct line of sight
A1 A periscope is a device used on submarines to see above the surface of the water.
A2 The periscope allows the submarine crew to safely navigate and spot potential dangers.
B1 The periscope was invented in the 19th century and revolutionized underwater navigation.
B2 Using a periscope, the submarine captain can observe enemy ships without being detected.
C1 The advanced periscope technology used in modern submarines provides high-resolution images.
C2 The periscope system on the submarine is equipped with infrared cameras for night vision capabilities.
formal The submarine captain used the periscope to scan the surface of the water for any potential threats.
informal I love using the periscope on the boat to see what's happening around us.
slang Check out this cool periscope on the ship, it's like having eyes underwater!
figurative His periscope-like ability to see through people's true intentions always amazed me.
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