circumflex scapular artery cir·cumf·lexs·capularartery uncommon noun 1. an artery that serves the muscles of the shoulder and scapular area Synonymscircumflex scapular arteryarteria circumflexa scapulae Related words Broader terms circumflex artery Parts shoulder WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.