Cumidine is a drug used for the treatment of arrhythmias. Its spelling follows a few basic pronunciation rules for English, but the letter combinations can be slightly tricky. The IPA phonetic transcription of the word is /kjuːmɪdiːn/. It starts with the /k/ sound, followed by the vowel combination /uː/. The letters /m/ and /ɪ/ come next, forming a syllable. Finally, it ends with the /diːn/ sound. While it may look complicated on paper, speaking the word out loud helps to clarify the correct pronunciation.