earthset
nounUK /ˈɜːθˌsɛt/ · US /ˈɝθˌsɛt/
Etymology From earth + set.
1
The event of the Earth setting under the horizon of another celestial body, typically the Moon (typically due to the observer being in motion over the surface of the Moon: see usage notes at earthrise).
- For quotations using this term, see Citations:earthset.