Definition of "quartodeciman" []

• A member of one of those early Christian communities which celebrated the Paschal festival on the fourteenth day of the month Nisan (the same day as that on which the Jews celebrated their Passover), without regard to the day of the week. (noun)
• Relating to the Quartodecimans or to their practice of celebrating the Paschal feast.

The Century Dictionary (Public Domain)

• "Rome and with all the southern Saxons, by expelling the "quartodeciman" schism, as it was called, from the Northumbrian kingdom, into which the neighborhood of the Scots had formerly introduced it."
• "Wilfrid, bishop of Lindisferne, acquired great merit, both with the court of Rome and with all the southern Saxons, by expelling the quartodeciman schism, as it was called, from the Northumbrian kingdom, into which the neighborhood of the Scots had formerly introduced it. ["