"Ecphyaditis" is a rare medical term that refers to the inflammation of the epiphyses, which are the ends of bones that make up joints. The spelling of this word can be explained using the International Phonetic Alphabet (IPA) phonetic transcription. It is pronounced as /ɛkfaɪəˈdaɪtɪs/, with the stress on the second syllable. The first two letters "ec" sound like the letter "E" followed by "K". The "ph" is pronounced as "F", while "y" is pronounced like "I". The word ends in "-itis", which refers to inflammation.