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.
The leaking of stomach acid up into the oesophagus.
To boil a liquid in a vessel having a reflux condenser
To flow back or return.
The act of retroceding; a going back.
The transfer of risk from one reinsurer to another.
The return of land, rights, etc. previously ceded.
Metastasis of an eruption or tumour from the surface to the interior of the body.