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retropropulsion
retropropulsion n.
Brit. 
/ˌrɛtrəʊprəˈpʌlʃn/
, /ˌrɛtrəʊprəˈpʌlʃn/U.S. /ˌrɛtroʊprəˈpəlʃ(ə)n/
backward propulsion; spec. propulsion provided by retro-rockets.In quot. 1949 in fictional context; the meaning of the word is unclear. In quot. 1951 in figurative context./ˌrɛtroʊprəˈpəlʃ(ə)n/ΚΠ
1879 G. Fleming Text-bk. Vet. Obstetr. 438 This retropropulsion should not be made directly forward, but obliquely, so as to press the region we desire to get rid of upward, downward, or to either side, according to circumstances.
1949 Punch 10 Aug. 168/2 He was merely finishing what he had to say about intervalved retro-propulsion.
1951 Bks. Abroad 25 23/1 Increase the reading speed to equal that of supersonic planes by using a method that must also be one of retropropulsion.
1958 Jrnl. Astronaut. Sci. 5 12/1 These problems would be greatly mitigated by the availability of retro-propulsion and the power and propulsion advances necessary to provide it.
2003 Philos. Trans. (Royal Soc.) A. 361 2996 For these missions, to the heliosphere..at 100 AU and beyond, retropropulsion is not required.
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- intercrosses
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- instantaneal
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- instantaneity
- instantaneous
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- instantaneous grip vice
- instantaneous heater
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- instantaneous water-heater
- instantaneous waterheater
- instantaneously
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- instantaneousnesses
- instantany
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- instantest
- instantial
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- instantiate
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