The word "isopral" is spelled with three syllables: /aɪ-səʊ-præl/. The first syllable is pronounced with the sound /aɪ/, like the word "eye". The second syllable has the sound /səʊ/, which is similar to the word "so". The final syllable contains the sound /præl/, which is pronounced with a short "a" sound, similar to the word "apple". Overall, the spelling of "isopral" accurately reflects its pronunciation in English.
Trichlorisopropyl-alcohol, occurring in the form of prismatic crystals of biting taste and camphoraceous odor, soluble in 35 parts of water; hypnotic in doses of gr. 5-20 (0.3-1.3).
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.