|perə|skäpik, -äpēk adjective
Etymology: Greek periskopein to look around (from peri- + skopein to look, view) + English -ic — more at spy
1. : viewing all around or on all sides : giving a distinct image of objects viewed obliquely as well as those in a direct line — used especially of various compound lenses for the microscope or camera and of spectacles having meniscus lenses with the concave surface toward the eye
2. : of, relating to, by means of, or resembling a periscope