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May 27, 2012
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Dictionary


per•i•scope



Pronunciation: (per'u-skōp"), [key]
—n.
1. an optical instrument for viewing objects that are above the level of direct sight or in an otherwise obstructed field of vision, consisting essentially of a tube with an arrangement of prisms or mirrors and, usually, lenses: used esp. in submarines.
2. a periscopic lens.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

perisarcperiscopic
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