noun

• (UK, law enforcement) Initialism of Metropolitan Police Service.
• (chemistry) Abbreviation of methylacetylene propadiene, stabilized. stabilized methylacetylene-propadiene mixture
• (education) Initialism of Master of Professional Studies.
• Initialism of master production schedule.
• (medicine) Initialism of myofascial pain syndrome.
• Initialism of muscle protein synthesis.
• (aeronautics) Initialism of main propulsion system (of the Space Shuttle).