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Meaning of vorticity

vor•tic•i•ty

Pronunciation: (vôr-tis'i-tē), [key]
— pl. -ties.
  1. a measure of the circulation of a fluid: a quantity equal to twice the angular momentum of a particle of the fluid around which there is circulation.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.