"Isolex" is a word that is spelled with a combination of characters that can be confusing for some readers. The IPA phonetic transcription of isolex is /iːsəˈlɛks/. This word has three syllables, with the strong emphasis on the second syllable. The first syllable contains the long "ee" sound, while the second syllable has the schwa sound. The final syllable contains the "ks" sound. The phonetic transcription makes the spelling of "isolex" more clear and helps the reader pronounce it correctly.