circumvolation noun4 •(no longer used) The act of flying round.Favourable conditions permitted the "circumvolation" of the world in twenty-four hours. But flying had not become general and was still the exclusive privilege of the council and its supporters. — 1903 •(no longer used) Circulation; the act of moving around something.It may be conjectured that the circumvolation of these moved the ether, and occasioned that whistling, the gentle pleasantness of which bore an adequate agreement with their well-timed motion. — 1790 •(no longer used) The act of surrounding with a military force; the creation of a cordon. •(figurative, no longer used) Vacillation; the act of changing one's mind repeatedly. formscircumvolations