Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. 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.

from the GNU version of the Collaborative International Dictionary of English

  • n. 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.

from The Century Dictionary and Cyclopedia

  • n. In chronology, the solar equation which would be necessary to prevent the calendar new moon from happening a day too late, or the suppression of the bissextile once in 134 years.

Etymologies

From Ancient Greek μετά ("beyond") + ἐν ("in") + πτωτός ("fallen"). (Wiktionary)

Examples

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  • Cool!

    March 1, 2008

  • 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.

    February 29, 2008