(of a rocket or guided missile) having more than one stage.
Origin of multistage
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
(of a rocket or missile) having several stages, each of which can be jettisoned after it has burnt out
(of a turbine, compressor, or supercharger) having more than one rotor
(of any process or device) having more than one stage
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012