() (MS Contin, MSIR, Avinza, Kadian, Oramorph, Roxanol, Kapanol) is a potent opiate analgesic medication and is considered to be the prototypical opioid.. Wikipedia suggests morphine . Morphin contains 7 letters and has 579 connections / rhymes. 1846 Prodynorphin Prodynorphin Definition: Prodynorphin is a opioid polypeptide hormone involved with chemical signal