Meaning of continuity equation

continu'ity equa"tion

Pronunciation: [key]
— Mech. Mech.
  1. the mathematical statement in fluid mechanics that, for a fluid passing through a tube in a steady flow, the mass flowing through any section of the tube in a unit of time is constant.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.