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Meaning of periscope
A periscope is an optical instrument used for observing objects that are not in the observer's direct line of sight.
Etymology of periscope
The word "periscope" comes from the Greek words "peri" meaning "around" and "skopein" meaning "to see"
The term was first used in the 17th century to describe an optical instrument used for observing objects from a hidden position
The modern periscope, with its characteristic tube and mirror or prism design, emerged in the 19th century for use in submarines and other military applications
Synonyms
telescope
binoculars
spyglass
observer
viewer
lookout
watchtower
sight
eyepiece
lens
optic
scanner
radar
detector
sensor
monitor
viewer
scope
glasses
monocular
window
porthole
peephole
aperture
sightline
viewpoint
vantage point
prospect
panorama
landscape
vista
horizon
outlook
surveillance
reconnaissance
observation
inspection
Definitions
- A tube with mirrors or prisms at each end, used for observing objects that are not in the observer's direct line of sight
- A device with a telescope or binoculars on a swiveling head, used for observing from a submerged submarine
- An optical instrument used for observing objects from a hidden or concealed position
Usage Examples
- The submarine used a periscope to observe the enemy ship without being detected
- The architect used a periscope to study the layout of the building from a unique perspective
- The soldier used a periscope to peer over the wall and gather intelligence on the enemy's position
Antonyms
blindness
ignorance
unawareness
obliviousness
invisibility
secrecy
concealment
camouflage
disguise
cover
screen
blockage
obstruction
hurdle
barrier
impediment
hindrance
detector
sensor
monitor
observer
watcher
lookout
sentinel
guard
picket