Proemptosis

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Proemptosis \Pro`emp*to"sis\, n. [NL., from Gr. ? to fall in
     before; ? before + ? in + ? to fall.] (Chron.)
     The addition of a day to the lunar calendar. [R.] See
     {Metemptosis}.
     [1913 Webster]