A strong upward movement of air. It often occurs in storms and can lift objects, birds, or even aircraft.
From 'up' (toward a higher place) + 'draft' (current of air), formed in modern English. 'Draft' comes from Old English 'dragan' meaning 'to draw, pull'.
Updrafts are like invisible elevators of air that birds and gliders ride to stay aloft without flapping. Strong storm updrafts are powerful enough to grow giant hailstones by tossing them up and down through clouds.
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