Compound of 宇宙 (space) + 飛行士 (aviator, flier).
Common collocations
- 宇宙飛行士になる: to become an astronaut
- 宇宙飛行士候補: astronaut candidate
- ベテランの宇宙飛行士: veteran astronaut
Similar words
- 飛行士: aviator; pilot — flies aircraft within the atmosphere
- 宇宙飛行: spaceflight — the act of flying in space, not the person