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noun [ C ] uk / ˈper.ɪ.skəʊp / us / ˈper.ɪ.skoʊp /. Add to word list. Add to word list. a long, vertical tube containing a set of mirrors that gives you a view of what is above you when you look through the bottom of the tube: Periscopes are used in submarines to allow you to look above the surface of the water.
Periscope, optical instrument used in land and sea warfare, submarine navigation, and elsewhere to enable an observer to see his surroundings while remaining under cover, behind armour, or submerged. A periscope includes two mirrors or reflecting prisms to change the direction of the light coming.
noun [ C ] us / ˈper.ɪ.skoʊp / uk / ˈper.ɪ.skəʊp / Add to word list. a long, vertical tube containing a set of mirrors that gives you a view of what is above you when you look through the bottom of the tube: Periscopes are used in submarines to allow you to look above the surface of the water. Richard Kolker/Photodisc/GettyImages.
Definition of periscope noun from the Oxford Advanced Learner's Dictionary. periscope. noun. /ˈperɪskəʊp/ a device consisting of a long tube containing mirrors that enable the user to see over the top of something, used especially in a submarine (= a ship that can operate underwater) to see above the surface of the sea Topics Transport by water c2.
May 14, 2024 · noun. 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. Collins English Dictionary.
Noun. Verb. Filter. noun. A periscopic lens. Webster's New World. An optical instrument consisting of a tube holding a system of lenses and mirrors or prisms, so arranged that a person looking through the eyepiece at one end can see objects reflected at the other end: used on submerged submarines, etc. Webster's New World. Similar definitions.
PERISCOPE meaning: 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.
