Optics. (of certain lenses in special microscopes, cameras, etc.) giving distinct vision obliquely, or all around, as well as, or instead of, in a direct line.
2.
pertaining to periscopes or their use.
Also, per⋅i⋅scop⋅i⋅cal.
Origin: 1795–1805; < Gk periskop(eîn) to look about (see peri-, -scope) + -ic
per·i·scope (pěr'ĭ-skōp') n. Any of various tubular optical instruments that contain reflecting elements, such as mirrors and prisms, to permit observation from a position displaced from a direct line of sight. per'i·scop'ic (-skŏp'ĭk), per'i·scop'i·cal (-ĭ-kəl) adj.
Main Entry: peri·scop·ic Pronunciation: "per-&-'skäp-ik Function: adjective : giving a distinct image of objects viewed obliquely aswell as those in a direct line
periscopic per·i·scop·ic (pěr'ĭ-skŏp'ĭk) adj. Of, relating to, or permitting the observation of objects from positions in or out of the direct line of sight.