Quenching p. pr. & vb. n. : of Quench

Example:
What's mean the Quenching of excitons in polymer materials,what is Quenching mean,it is same as recombination?

Taxonomy
gases, scrubber, steel, bath, metals, liquid droplets, surface hardening, free encyclopedia, gas stream, salt bath furnace, Great Lakes Steel Corporation, commonly used, exhaust gas, barriers, cast iron, metals and alloys, progression, air furnaces.

Defination from the web:
quenching is used to prevent low-temperature processes such as phase transformations from occurring ... This allows quenching to start at a lower temperature, making the process much easier. ...