LATIN DICTIONARYLexicon Latīnum
adjective

mĕdĭlūnĭus

Meaning

  1. in the middle of the month, having half a disk, half-orbed

Lewis & Short A Latin Dictionary, 1879

mĕdĭlūnĭus, a, um, adj. mediusluna,
I. in the middle of the month, having half a disk, half-orbed (post-class): (luna) primo est corniculata, deinde medilunia, Mart. Cap. 7, § 738.