tratamiento
/tɾataˈmjento/ · B1 · noun · m
treatment
💊 tratamiento = tratar (to treat) + -miento (-ment): treat-ment
Built exactly like English treatment: the verb tratar plus the noun ending -miento, which matches English -ment. It also covers how you address someone, as in a title or form of address, since that is how you treat them in speech.