arteriole
noun /ɑːˈtɪəriəʊl/
/ɑːrˈtɪriəʊl/
(anatomy)- a thin branch of an artery that leads off into capillariesWord Originmid 19th cent.: from French artériole, diminutive of artère from Latin arteria, from Greek artēria, probably from airein ‘raise’.