arteriole[är tir′ē ōl′]
any of the smaller blood vessels, intermediate in size and position between arteries and capillaries
Origin of arterioleModern Latin arteriola, diminutive of Classical Latin arteria, artery
One of the small terminal branches of an artery, especially one that connects with a capillary.
Origin of arterioleNew Latin artēriola, diminutive of Latin artēria, artery, from Greek artēriā; see wer-1 in Indo-European roots.
- (anatomy) One of the small branches of an artery, especially one that connects with capillaries.