Metemptosis

1 definition found

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

  Metemptosis \Met`emp*to"sis\, n. [NL., from Gr. ? beyond, after
     + ? a falling upon, fr. ? to fall in or upon; ? in + ? to
     fall.] (Chron.)
     The suppression of a day in the calendar to prevent the date
     of the new moon being set a day too late, or the suppression
     of the bissextile day once in 134 years. The opposite to this


     is the proemptosis, or the addition of a day every 330 years,
     and another every 2,400 years.
     [1913 Webster]