"a making human or humane; assimilation to humanity," 1753, also humanisation, noun of action from humanize.
Entries linking to humanization
humanize v.
c. 1600, "make or render human," from human (adj.) + -ize. Meaning "civilize, make humane" is from 1640s. Also humanise. Related: Humanized; humanizing. Humanify "make human" is recorded from 1620s.