Definition of circumlunar in English:

circumlunar

Line breaks: cir¦cum|lunar
Pronunciation: /səːkəmˈluːnə
 
/

adjective

  • Moving or situated around the moon: a circumlunar flight
    More example sentences
    • A Soyuz, with a logistics module attached, rounds the Moon on a circumlunar mission.
    • Kennedy approved more money for Saturn, but not for Apollo, which was then planned to eventually conduct circumlunar flights, not a Moon landing.
    • These will include the basic vehicle, along with a plan to develop it into something capable of a circumlunar flight.

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Pronunciation: ˌastrə(ʊ)ˈgeɪʃ(ə)n
noun
(in science fiction) navigation in outer space