solification.

/ˌsəʊlɪfɪˈkɑːtɪəʊ/Etymology: An invented Latin word, formed on solific adj.: see -fication suffix.
1941 W. H. Auden iii. 74 Who on the lives about you throw A calm solificatio.
This entry has not yet been fully updated (first published 1986; most recently modified version published online September 2019).