Ex*trav`a*sa"tion, n. (Geol.)
The issue of lava and other volcanic products from the
earth.
Ex*trav`a*sa"tion (?), n. [Cf. F.
extravasation.] The act of forcing or letting out of its
proper vessels or ducts, as a fluid; effusion; as, an
extravasation of blood after a rupture of the
vessels.
Ex*trav`a*sa"tion, n. (Geol.)
The issue of lava and other volcanic products from the
earth.