WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / H / heart muscle heart muscle noun 12 letters Scrabble 18 WWF 21 Definitions noun the muscle tissue of the heart; adapted to continued rhythmic contraction cardiac muscle Look “heart muscle” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →