Definition of passive transport in English:

passive transport

noun

  • The carrying or conveyance of an organism, substance, etc., from one location to another without any effort or expenditure of energy on the part of the thing carried; (Biochemistry) the movement of molecules or ions across a cellular membrane without expenditure of chemical energy, as by diffusion or osmosis.

Origin

Early 20th century; earliest use found in Proceedings of the American Philosophical Society.