downwash en · NOUN
Etymology
Etymology tree English down- Proto-Indo-European *wed- Proto-Indo-European *-sḱéti Proto-Indo-European *wodsḱéti Proto-Germanic *waskaną Proto-West Germanic *waskan Old English wascan Middle English wasshen English wash English downwash From down- + wash.
Meanings
- downward air turbulence caused by a propeller or jet, but especially by helicopter blades
-
The downward motion of air as a result of eddies behind a wing or chimney, etc.
There is significant upwash ahead of the wing and even more downwash behind the wing.
2008, John S. Denker, How It Flies:
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| downwashes | Number=Plur | lexicographic |