Definitionen
1.NounThe extinction of any of several physical properties.
2.NounThe rapid cooling of a hot metal object, by placing it in a liquid, in order to harden it.
3.NounA process in which a galaxy loses cold gas, thus strongly suppressing star formation.
4.NounThe dissipation of energy from light in excess of what can be used for photosynthesis.
5.Verbpresent participle and gerund of quench