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Meaning of unscrambler

un•scram•bler

Pronunciation: (un-skram'blur), [key]
— n.
  1. a person or thing that unscrambles.
  2. an electronic device that makes scrambled telecommunications signals intelligible by systematically tuning the receiver to the frequencies used in transmission. Cf.(def. 2).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.