Any of a group of early Christians who began Easter on Nisan 14, the day Jesus was crucified according to the Gospel of JohnJohn 19:14, 31, 42, and the day before the beginning of Jewish Passover, which is Nisan 15.
Adjective
Of or pertaining to these people.
quindecemviri
quindecennial
quindecennial
adj
Happening once in fifteen years.
Lasting fifteen years.
quindecillion
quindecillion
num
(rare, US, modern Britain and Australia short scale) 10⁴⁸.
(rare, dated, Britain and Australia, long scale) 10⁹⁰.