The word "ileadelphus" is spelled with a unique combination of vowels and consonants. The phonetic transcription for this word is /ɪliːˈdɛlfəs/. The first syllable is pronounced with a short "i" sound, followed by a long "e" sound. The second syllable features a stressed "e" sound, followed by the letters "d" and "l" pronounced together, as in "del". The final syllable features an unstressed "əs" sound. Despite its complex spelling, "ileadelphus" is a relatively rare word and not commonly used in everyday conversation.
Iliadelphus.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.