Definition of perilune in English:

perilune

Syllabification: per·i·lune
Pronunciation: /ˈperəˌlo͞on
 
/

noun

The point at which a spacecraft in lunar orbit is closest to the moon. The opposite of apolune.
More example sentences
  • SMART - 1 reached its closest point to the lunar surface so far - its first ‘perilune’ - at an altitude of about 5000 kilometres at 18: 48 Central European Time on 15 November.

Origin

1960s: from peri- 'around' + Latin luna 'moon', on the pattern of perigee.

Definition of perilune in:

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Word of the day anomalous
Pronunciation: əˈnämələs
adjective
deviating from what is standard, normal, or expected