APORPHINE

ˈaˌpȯrˌfēn, ˈapərˌ-; (ˈ)aˈpȯrˌ- noun

( -s )

Etymology: International Scientific Vocabulary apo- + mo rphine

: a synthetic alkaloid C 17 H 17 N regarded as the parent from which morphine, bulbocapnine, and related alkaloids are derived