+An **eddy** is a swirling current of [fluid](/wiki/fluid) whose flow deviates from the general stream. Often seen in [water](/wiki/water) or air, these transient patterns signify a localized change in momentum within a larger system.
+## See also
+- [Vortex](/wiki/vortex)
+- [Turbulence](/wiki/turbulence)
+- [Current](/wiki/current)