the moment when the moon disappears below the horizon
moonset in American English
(ˈmunˌsɛt)
noun
1.
the passing of the upper limb of the moon below the horizon
2.
the time of this
moonset in American English
(ˈmuːnˌset)
noun
1.
the setting of the moon below the horizon
2.
the time at which the moon disappears below the horizon
Word origin
[1835–45; moon + (sun)set]This word is first recorded in the period 1835–45. Other words that entered Englishat around the same time include: crosshead, hot plate, hybridize, placement, squeegee