perilunePronunciation: /ˈpɛrɪluːn/Definition of perilune noun [mass noun] the point at which a spacecraft in lunar orbit is closest to the moon. The opposite of apolune.Origin: 1960s: from peri- 'around' + Latin luna 'moon', on the pattern of perigeeperilune in other Oxford dictionaries Definition of perilune in the US English dictionary
