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jet stream definition

☆ jet stream

  1. any of several bands of high-velocity winds moving from west to east around the earth at altitudes from c. 12 to 16 km (c. 8 to 10 mi)
  2. the stream of exhaust from any reaction engine
    also jetstream jet′·stream′

    noun

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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