lithify


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lithify

(ˈlɪθɪfaɪ)
vb (tr) , -fies, -fying or -fied
to turn into rock

lith•i•fy

(ˈlɪθ əˌfaɪ)

v. -fied, -fy•ing. v.t.
1. to change (sediment) to stone or rock.
v.i.
2. to become lithified.