The spelling of the word "tillison" can be explained using IPA phonetic transcription as /ˈtɪl.ɪ.sən/. In this word, the "till" is pronounced with a short "i" sound as in "fill" followed by a double "l" and ending with a short "uh" sound like in "button." The "son" at the end is pronounced like the word "sun." Although the word "tillison" may not be common, its spelling can provide an example of using phonetic transcription to understand word pronunciation.