Moon-culminating \Moon"-cul"mi*na`ting\, a.
Culminating, or coming to the meredian, at or about the same
time with the moon; -- said of a star or stars, esp. of
certain stars selected beforehand, and named in an ephemeris
(as the Nautical Almanac), as suitable to be observed in
connection with the moon at culmination, for determining
terrestrial longitude.
[1913 Webster]