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The Collaborative International Dictionary
Arteriola

Arteriola \Ar*te`ri*o"la\, Arteriole \Ar*te"ri*ole\, n. [NL. arteriola, dim. of L. arteria: cf. F. art['e]riole.] A small artery with a muscular wall.

Wiktionary
arteriola

n. (context anatomy English) An arteriole.

WordNet
arteriola

n. one of the small thin-walled arteries that end in capillaries [syn: arteriole, capillary artery]