Method of transport, usually public, that carries people in greater quantities than a typical private method such as car.

plural of mass noun

plural of mass murder

The killing of a large number of people over a short period of time.

Someone who commits a mass murder.

The formalities that accompany a mass burial

Burial of multiple bodies in a mass grave

A large-scale transportation system in which the passengers do not travel in their own vehicles.

The process of manufacturing products on a large scale.

A device used in mass spectrometry to discover the mass spectrum of a given substance.