The word "propaesin" is not a commonly used word in English, but it can be spelled using the International Phonetic Alphabet (IPA) as /prəʊˈpeɪzɪn/. The first syllable is pronounced with the short "o" sound, followed by the stressed syllable that starts with the "p" sound. The "ae" in the third syllable is pronounced like the "e" in "bed", followed by the "z" sound, and ending with the "in" sound. Despite its unfamiliarity, mastering pronunciation of lesser-known words like "propaesin" can improve one's overall language skills.
Trade name of paramidobenzoic acid-propylester, employed as a local anesthetic.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.