passive transport
Biology term for the movement of substances across a cell membrane without energy input, often contrasted with 能動輸送 (active transport).
See also: 能動輸送
Passive transport does not require energy.
The movement of water across a cell membrane is an example of passive transport.
能動輸送 (active transport) requires energy, while 受動輸送 (passive transport) does not.
Compound of 受動 (passive) and 輸送 (transport), likely a calque from English 'passive transport'.