- microcirculation thing - Resembling a hair; fine; minute; very slender; having
minute tubes or interspaces; having very small bore; as, the capillary
vessels of animals and plants. - Pertaining to capillary tubes or vessels; as, capillary
action. - A tube or vessel, extremely fine or minute. - A minute, thin-walled vessel; particularly one of the
smallest blood vessels connecting arteries and veins, but used also for
the smallest lymphatic and biliary vessels.