Boost can refer to: Science, technology and mathematics Automotive: Boost, positive manifold pressure in cars, see turbocharger#Boost threshold. a loose term for turbo or supercharger A slang term meaning to start a vehicle, see jump start (vehicle) Lorentz boost, a type of Lorentz transformation The boost phase of the flight of a ballistic missile's the first phase, in which it's lifted and accelerated by a rocket An electrical circuit variation of a DC to DC converter, which increases… (More on Boost)