Definition of supermoon:
(n) :
(astrology, astronomy) A full moon or new moon, when the Earth–Moon distance is in the lowest tenth of its range.
(n) :
(astrology, astronomy) Alternative form of supermoon. [(astrology, astronomy) A full moon or new moon, when the Earth–Moon distance is in the lowest tenth of its range.]
(n) :
(astrology) Alternative form of supermoon. [(astrology, astronomy) A full moon or new moon, when the Earth–Moon distance is in the lowest tenth of its range.]