updraft

[uhp-draft, -drahft]

the movement upward of air or other gas.

Origin of updraft

late Middle English word dating back to 1400–50; see origin at up-, draft

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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

Word Origin and History for updraft

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

updraft in Science

[ŭp′drăft′]

An upward current of warm, moist air. With enough moisture, the current may visibly condense into a cumulus or cumulonimbus cloud. Compare downdraft.