Noah Webster
Proemptosis
PROEMP'TOSIS, noun [Gr. to fall before.] In chronology, the lunar equation or addition of a day, necessary to prevent the new moon from happening a day too soon.
PROEMP'TOSIS, noun [Gr. to fall before.] In chronology, the lunar equation or addition of a day, necessary to prevent the new moon from happening a day too soon.