'Extravasate' definitions:

Definition of 'extravasate'

verb

Force out or cause to escape from a proper vessel or channel

verb

Become active and spew forth lava and rocks; "Vesuvius erupts once in a while" [syn: erupt, belch, extravasate]

verb

Geology: cause molten material, such as lava, to pour forth

From: GCIDE

Extravasate \Ex*trav"a*sate\, v. t. [imp. & p. p. Extravasated; p. pr. & vb. n. Extravasating.] [Pref. extra- + L. vas vessel: cf. F. extravaser. See Vase.] To force or let out of the proper vessels or arteries, as blood. [1913 Webster]

From: GCIDE

Extravasate \Ex*trav"a*sate\, v. i. [See Extravasate, v. t.] (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. [Webster 1913 Suppl.]