vactrain; vacuum tube train
A proposed high-speed train that travels through a vacuum or low-pressure tube to reduce air resistance.
A vacuum tube train is theoretically said to be able to travel at over 1000 km/h.
Refers to maglev trains, which use magnetic levitation; a vactrain may also use maglev technology but operates in a vacuum tube.
Specifically the superconducting maglev system; distinct from the vacuum tube concept, though both aim for very high speeds.
Compound of 真空 (vacuum), チューブ (tube), and 列車 (train). A direct translation of the English term 'vacuum tube train' or 'vactrain'.