n. & v.
n. 1 a backward flow. 2 Chem. a method of boiling a liquid so that any vapour is liquefied and returned to the boiler.
v.tr. & intr. Chem. boil or be boiled under reflux.
n. & v.
n. 1 a backward flow. 2 Chem. a method of boiling a liquid so that any vapour is liquefied and returned to the boiler.
v.tr. & intr. Chem. boil or be boiled under reflux.
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012