Home › Words › M › metarteriolemetarteriolemetarteriole · noun — an arterial capillary; a short vessel linking arterioles and venules.Definition from Wiktionary (CC BY-SA 3.0).EtymologyFrom meta- + arteriole.nounAn arterial capillary; a short vessel linking arterioles and venules.Definitions & examples from Wiktionary (CC BY-SA 3.0).