1. In communications, the quality of equipment, devices, systems, and associated hardware that permits their being moved from one location to another to interconnect with locally available complementary equipment, devices, systems, associated hardware, or other complementary facilities.
Note: Transportability implies the use of standardized components, such as standardized plugs and transmission media.
2. The capability of material to be moved by towing, self-propulsion, or carrier via any means, such as railways, highways, waterways, pipelines, oceans, and airways.
Source: from Federal Standard 1037C and from the Department of Defense Dictionary of Military and Associated Terms