WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / A / arrhythmia arrhythmia noun /ərɪðmiə/ 4 syllables 10 letters Scrabble 21 WWF 19 Definitions noun an abnormal rate of muscle contractions in the heart cardiac arrhythmia Look “arrhythmia” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →