Definition for Periscope:

• an optical instrument of tubular shape containing an arrangement of lenses and mirrors ( or prisms), allowing a person to observe a field of view otherwise obstructed, as beyond an obstructing object or ( as in submarines) above the surface of the water.

Synonyms for Periscope:

• n.

  •
  • telescopic.
  •finder (noun)
  • periscopes.
  •optical instrument (noun)
  • concave lens,
  • eyeglass,
  • camera,
  • field glasses,
  • ocular,
  • magnifying glass,
  • microscope,
  • prism,
  • eyepiece,
  • convex lens,
  • telescope,
  • pince-nez,
  • lorgnette,
  • lens,
  • binocular,
  • magnifier,
  • mirror,
  • condenser.

Antonyms for Periscope:

• n.

  • finder
    loser, stray, owner.

Holonyms for Periscope:

• n.

  • artifact
    submarine, u-boat, sub, pigboat.

Hyponym for Periscope:

• n.

  • artifact
    optical instrument.