What does MJ stand for?

Lineas Aereas Privadas Argentinas - ICAO designator (AD)

Madras Jurist - India - A publication (DLA)

Main Jet - Automotive engineering

Major Subject Descriptor - Online database field identifier

Manual Jack (VLIE)

Manufacturers' Junction Railway Co. - AAR code

Marijuana

Marine Jet

Master of Journalism

Master of Jurisprudence

Mastic Joint - Technical drawings

Mead Johnson & Co. - Research code symbol

Mechanical Joint (NASA)

Megajoule

Michael Jackson - Brewing (BEBR)

Michael Joseph - Commercial firm - British

Microturbo - France - ICAO aircraft manufacturer identifier (ICAO)

Military Judge (AFM)

Military Justice Reporter (West) - A publication (DLA)

Milwaukee Journal - A newspaper

Mineralogical Journal - A publication (AD)

Minerva Jacket - Medicine (MELL)

Ministry of Justice (SAUO)

Missionaries of St. Joseph (Mexico) (TOCD)

Missionary Sisters of Jesus (TOCD)

Modular Jack (VLIE)

Monaco - NCIC country-territory code (NCIC)

Missionaries of St. Joseph (TOCD)

Montserrat - MARC country of publication code - Library of Congress (LCCP)