To unite, to combine, to enter into an alliance
Connotes activities, operations, organizations, etc., in which elements of two or more Military Departments participate.
Note that this definition of “joint” is applicable to requirement documents and capability solutions which apply to more than one DOD Component.
Activities, operations, organizations, etc., in which elements of more than one Service of the same nation participate. When all services are not involved, the participating Services shall be identified, e.g., Joint Army-Navy.
Refers to the connection between two lengths of pipe such as the weld joint for steel pipe and the heat fusion or glue joint for plastic pipe. Joint is also used as a slang term meaning a length of pipe i.e., joint of pipe.
Joint has been defined 13 different ways in documents like Legal Glossary, USPC Consolidated Glossary, USPC Consolidated Glossary, and 7 more.