The spelling of the word "Jillenne" can be explained using the International Phonetic Alphabet (IPA). The letter 'J' represents the phoneme /dʒ/, pronounced as in 'janitor', while the letter 'i' stands for the phoneme /ɪ/, which is pronounced like the 'i' in 'bit'. The letters 'l' and 'n' represent the phonemes /l/ and /n/ respectively, and the final 'e' is silent. Therefore, "Jillenne" is pronounced as /dʒɪlɛn/.