The Collaborative International Dictionary
Plenilunary
Plenilunary \Plen`i*lu"na*ry\ (pl[e^]n`[i^]*l[umc]"n[.a]*r[y^]),
a.
Of or pertaining to the full moon. [Obs.]
--Sir T. Browne.
Wiktionary
plenilunary
a. (context obsolete English) Relating to the full moon.