extravenate adjective 1verb 1forms 3 adjective1 •(no longer used) That has been let out of the veins.the wound is affected in like manner as is the extravenate blood by the Sympathetick medicine — 1665 verb1 •Synonym of extravasate.And finally, that having obtained this plenary satisfaction, of the sympathy maintained betwixt the blood extravenated, and that yet conserved in the veins .... — 1650 formsextravenated · extravenating · extravenates