What is "solidifying"

Solidify \So*lid"i*fy\, v. t. [imp. & p. p. Solidified; p. pr. & vb. n. Solidifying.] [Solid + -fy: cf. F. solidifier.] To make solid or compact.

Every machine is a solidified mechanical theorem.
--H. Spencer.

vb. (present participle of solidify English)

n. the process of becoming hard or solid by cooling or drying or crystallization; "the hardening of concrete"; "he tested the set of the glue" [syn: hardening, solidification, set, curing]