alternative form of landmass

(astronomy, mathematics) A relationship that describes the mass distribution.

(colloquial) mass spectrometer

A direct action event in which bicycle riders travel through city streets as a group.

plural of mass spectrograph

(physics, analytical chemistry) A mass spectrometer

(psychology) The sociopsychological phenomenon in which a large group of people exhibit the same or similar hysterical symptoms simultaneously.

(law) Abbreviation of United States District Court for the District of Massachusetts, as used in case citations.

plural of mass spectrometry

(crime) The shooting of multiple people over a short period of time, particularly when there are many victims and/or the victims are chosen indiscriminately.