noun
- optical instruments with mirrors or prisms that allow observation from a concealed or protected position, especially used in submarines
Usage: nautical; military
Examples
- The submarine captain raised the periscope to scan the surface.
- Modern periscopes use advanced optics and digital displays.
- The crew used periscopes to monitor enemy ship movements.
- Periscopes allow submarines to remain hidden while observing above water.
- The museum displayed vintage periscopes from World War II submarines.
- Tank crews rely on periscopes for safe observation during combat.