pleniluneyoudaoicibaDictYouDict[plenilune 词源字典]
"A full moon; the time of a full moon", Late 15th cent.; earliest use found in Higden's Polychronicon. From classical Latin plēnilūnium plenilunium; compare lune, variant of luna.[plenilune etymology, plenilune origin, 英语词源]