morphinization
/ˌmɔːfɪnʌɪˈzeɪʃn/noun
The process of treating (an animal) with morphine, especially in order to induce dependency or anaesthesia, or in the investigation of some other physiological effect.
Origin
Late 19th century; earliest use found in Isaac Funk (1839–1912), publisher and reformer. From morphinize + -ation.