Webster's 1828 Dictionary
METEMPTOSIS
n.[Gr. after, and to fall. ] In chronology, the solar equation necessary to prevent the new moon from happening a day too late, or the suppression of the bissextile once in 134 years. The opposite to this is the proemptosis, or the addition of a day every 3 years, and another every 24 years.
Webster's 1913 Dictionary
METEMPTOSIS
Met `emp *to "sis, n. Etym: [NL. , from Gr. (Chron.)
Defn: 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 33 years, and another every 2,4 years.
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