definitize

[ def-uh-ni-tahyz, dih-fin-i- ]
/ ˈdɛf ə nɪˌtaɪz, dɪˈfɪn ɪ- /

verb (used with object), def·i·nit·ized, def·i·nit·iz·ing.

to cause to become definite; crystallize.
Also especially British, def·i·nit·ise.

Origin of definitize

First recorded in 1875–80; definite + -ize