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’.
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arteriole