9 letters · 17 points in Scrabble
originEtymology tree Proto-Indo-European *mey-der.? Ancient Greek μικρός (mikrós)der. English micro- Proto-Germanic *bagmaz? Proto-West Germanic *baum Old English bēam Middle English beem English beam English microbeam From micro- + beam.
Etymology from Wiktionary, CC BY-SA 3.0