(idiomatic) In a condition characterized by comfort, success, easy living, or general well-being.

plural of mass spectrograph

plural of master chief petty officer

(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.

plural of master sergeant

(UK, Navy) A warrant officer or chief petty officer responsible for discipline aboard a naval ship.

(Canada, Navy) A non-commissioned officer in the Canadian Forces Maritime Command, ranking above leading seaman and below petty officer second class.

plural of master seaman

(US, Navy) A non-commissioned officer in the United States Navy and United States Coast Guard, ranking above senior chief petty officer.