To pass by infiltration or effusion from the normal channel, such as a blood vessel or a lymphatic, into the surrounding tissue; said of blood, lymph, etc
geology: cause molten material, such as lava, to pour forth force out or cause to escape from a proper vessel or channel
the process of exuding or passing out of a vessel into surrounding tissues; said or blood or lymph or urine an extravasated liquid (blood or lymph or urine); the product of extravasation