simple past tense and past participle of equivalence
quindecemvir
quindecemvir
noun
(historical) Any member of an official group of fifteen people, especially a member of the 15-man college of priests who cared for the Sibylline Books in ancient Rome.
quindecimvir
quindecimvir
noun
(historical, Ancient Rome) Any member of a group of fifteen officials.