The word "sulphurette" is a variant spelling of "sulfurette," which means a compound containing sulfur. The spelling "sulphurette" follows British English spelling conventions, where the letter "p" is added after the letter "h" to indicate the sound "f." In IPA phonetic transcription, "sulphurette" is pronounced /ˈsʌlfərət/, with emphasis on the first syllable and the "u" pronounced like "uh." The "ph" sound is represented by the "f" symbol, and the final "e" is silent.