12 letters · 17 points in Scrabble
noun a transient air pressure greater than the surrounding atmospheric pressure
originEtymology tree Proto-Indo-European *úp Proto-Indo-European *-er Proto-Indo-European *upér Proto-Germanic *uber Old English ofer- Middle English over- English over- English pressure English overpressure From over- + pressure.
Etymology from Wiktionary, CC BY-SA 3.0