extravasate

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. Pathology To force the flow of (blood or lymph) from a vessel out into surrounding tissue.
2. v. Geology To cause (molten lava) to pour forth from a volcanic vent.
3. v. Pathology To exude from a vessel into surrounding tissue.
4. v. Geology To erupt.

Century Dictionary and Cyclopedia

1. In pathology, to become infiltrated or effused; escape, as blood, lymph, or serum, from its proper vessels into surrounding tissues.
2. Extravasated.
3. n. The fluid which has been extra vasated.

Wiktionary

1. adj. Outside of a vessel.
2. n. That which is outside a vessel (especially blood or other bodily fluids)
3. v. To flow (or be forced) from a vessel

GNU Webster's 1913

1. v. To force or let out of the proper vessels or arteries, as blood.
2. v. (Physiol.) 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.

WordNet 3.0

1. v. geology: cause molten material, such as lava, to pour forth
2. v. force out or cause to escape from a proper vessel or channel
3. v. become active and spew forth lava and rocks