[doun-draft, -drahft]

Origin of downdraft

First recorded in 1780–90; down1 + draft Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

downdraft in Science


  1. A downward moving current of air in a cumulonimbus cloud. Compare updraft.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.