TACHYCARDIA /tæ.kɪˈkɑː(ɹ).di.ə/ ► audio Scrabble 22 Words With Friends 22 Definition noun abnormally rapid heartbeat (over 100 beats per minute). See all 171 words you can make from TACHYCARDIA → 11-letter words Words starting with T Words ending with A ← Unscramble different letters