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[uhp-draft, -drahft] /ˈʌpˌdræft, -ˌdrɑft/
the movement upward of air or other gas.
Origin of updraft
late Middle English
late Middle English word dating back to 1400-50; See origin at up-, draft Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for updraft
Historical Examples
  • I could stand to have another hit ready when updraft petered out.

    The Mind Digger Winston Marks
  • Parodisiac was much too good to hold for the closing of updraft.

    The Mind Digger Winston Marks
  • The updraft gave out and the rate of climb meter began to register a drop.

    Frigid Fracas Dallas McCord Reynolds
  • updraft did all right in the sticks, but it was when we opened on Broadway that it began to coin money.

    The Mind Digger Winston Marks
  • And no patch of blue sky ever looked so good as that sky above the mountain, swept clean of the rain curtain by the updraft.

    Valley of the Croen Lee Tarbell
  • Did his down-to-earth touch account for updraft's surprising audience appeal?

    The Mind Digger Winston Marks
Word Origin and History for updraft

"rising air current," 1909, from up + draft (n.).

Online Etymology Dictionary, © 2010 Douglas Harper
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updraft in Science
An upward current of warm, moist air. With enough moisture, the current may visibly condense into a cumulus or cumulonimbus cloud. Compare downdraft.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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