10 letters · 13 points in Scrabble
noun one billionth (10^-9) of a second; one thousandth of a microsecond
originEtymology tree Ancient Greek νᾶνος (nânos)bor. Latin nānusbor. English nano- English second English nanosecond From nano- + second.
Etymology from Wiktionary, CC BY-SA 3.0