(1):
(v. i.) To become antiquated, rigid, or fixed, beyond the influence of change or progress.
(2):
(v. i.) To become fossil.
(3):
(v. t.) To convert into a fossil; to petrify; as, to fossilize bones or wood.
(4):
(v. t.) To cause to become antiquated, rigid, or fixed, as by fossilization; to mummify; to deaden.