The spelling of the word "rowlette" can be explained using IPA phonetic transcription. It is pronounced as /ˌraʊˈlɛt/ and is a combination of the words "row" and "lette". The first syllable "row" is pronounced with the diphthong /aʊ/ like the word "cow". The second syllable "lette" is pronounced with the short vowel sound /ɛ/ and the consonant sound /t/. Therefore, the correct spelling of the word is "rowlette" and not "roulette" as it may have similar phonetic components.