reflux

A flowing back; ebb.

Backflow, as of gastric acid into the esophagus.

The process of refluxing.

To boil (a liquid) in a vessel attached to a condenser so that the vapors continuously condense for reboiling.

To be boiled in such a way.

A flowing back: as, the flux and reflux of the tides.

Returning, or flowing back; reflex.

A flowing back, as the return of a fluid; ebb; reaction.

the backwards flow of any fluid

a technique, using a reflux condenser, allowing one to boil the contents of a vessel over an extended period