definition of
extravasate

[1] #1 extravasate v. force out or cause to escape from a proper vessel or channel. wn

[2] #2 extravasate v. [erupt, belch] become active and spew forth lava and rocks; "Vesuvius erupts once in a while". wn

[3] #3 extravasate v. geology: cause molten material, such as lava, to pour forth. wn