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extravasate (ik-STRAV-uh-sayt) verb tr.

1. Pathology. To force the flow of (blood or lymph) from a vessel out into surrounding tissue.

2. Geology. To cause (molten lava) to pour forth from a volcanic vent.

verb intr.

1. Pathology. To exude from a vessel into surrounding tissue.

2. Geology. To erupt.

[Extra- + vas (o)- + -ate.]

"Malignant cells then extravasate from the vessel into the host tissue where they grow and produce a metastatic tumor." Strohl, Roberta Anne, Cutaneous manifestations of malignant disease, Dermatology Nursing, 1 Feb 1998.

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