perilune [per-i-loon] Word Origin noun

  1. the point in a lunar orbit that is nearest to the moon.

Compare apolune. Origin of perilune 1955–60; peri- + -lune Latin lūna moon, on the model of perigee British Dictionary definitions for perilune perilune noun

  1. the point in a lunar orbit when a spacecraft launched from the moon is nearest the moonCompare apolune, pericynthion

Word Origin for perilune C20: from peri- + -lune, from Latin lūna moon perilune in Science perilune [pĕr′ĭ-lōōn′]

  1. The point at which an object orbiting the Moon, such as an artificial satellite, is closest to the Moon’s center.
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