(British Army military slang) A disorganised soldier.

(physics) a flow pattern exhibited by superfluids, such as ⁴He below 2.17K, in which the circulation rate is restricted to a quantized multiple of Planck's constant divided by the mass of the He atom

plural of vortex ring

A toroidal vortex in a fluid or gas, i.e. a region where the fluid mostly spins around an imaginary axis line that forms a closed loop.

plural of quantized vortex

(chemistry, historical) A hypothetical ring-shaped mass of elementary matter in continuous vortical motion, once regarded as the typical form and structure of the chemical atom.

plural of vortex atom

A large-scale cyclone located in the middle and upper troposphere and stratosphere that surround the polar highs and lie in the wake of the polar front.

plural of vile vortex

Any of a number of geographic areas, arranged in a pattern around the Earth, that are held to be the sites of unexplained disappearances and other mysterious phenomena.