9 letters · 19 points in Scrabble
noun one of many contractile filaments that make up a striated muscle fiber
originEtymology tree Proto-Indo-European *múHs Proto-Hellenic *mū́s Ancient Greek μῦς (mûs)der. English myo- English fibril English myofibril From myo- + fibril.
Etymology from Wiktionary, CC BY-SA 3.0