Periscopic

(definition) by Webster 1913 Wed Dec 22 1999 at 1:55:12

Per`i*scop"ic (?), a. [Cf. F. p'eriscopique.]

Viewing all around, or on all sides.

Periscopic spectacles Opt., spectacles having concavo-convex or convexo-concave lenses with a considerable curvature corresponding to that of the eye, to increase the distinctness of objects viewed obliquely.

 

© Webster 1913.

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