Hallion's test Hal·lion's test (äl-yôɴz') n. A test of collateral circulation in cases of aneurysm, in which the main artery and vein of a limb are compressed; the veins of the hand or foot swell up if the collateral circulation is impeded.
Dictionary.com presents 366 FAQs, incorporating some of the frequently asked questions from the past with newer queries.