ed·dy / ˈedē/ • n. (pl. -dies) a circular movement of water, counter to a main current, causing a small whirlpool. ∎  a movement of wind, fog, or smoke resembling this.• v. (-dies, -died) [intr.] (of water, air, or smoke) move in a circular way: the mists from the river eddied around the banks.

eddy The motion of a fluid in directions differing from, and at some points contrary to, the direction of the larger-scale current. In air, eddies vary in size from small-scale turbulence (which can transport dust and diffuse pollutants) to large-scale movements (e.g. cyclone and anticyclone cells) within the general global circulation of the atmosphere.

eddy Motion of a fluid in directions differing from, and at some points contrary to, the direction of the larger-scale current. In air, eddies vary in size from small-scale turbulence (which can transport dust and diffuse pollutants) to large-scale movements (e.g. cyclone and anticyclone cells) within the general global circulation of the atmosphere.

eddy small whirlpool. XV (Sc. ydy). perh. of Scand. orig. (cf. ON. iǒa eddy, whirlpool); prob. f. base of OE. ed- again, back = OHG. et(a)-, ON. iǒ-, Goth. iþ then, but, rel. to L. et and, Gr. éti yet; cf. MHG. itwæge flood, whirlpool (-wæge corr. to OE. wǣġ wave).