INDICTION
indiction
(noun) a 15-year cycle used as a chronological unit in ancient Rome and adopted in some medieval kingdoms
Source: WordNet® 3.1
Etymology
Noun
indiction (plural indictions)
(historical) A fiscal period of fifteen years, instituted by Constantine in 313 C.E. (but counting from 1st September 312), used throughout the Middle Ages as a way of dating events, documents etc.
A declaration or official announcement.
(historical) The decree made by Roman emperors which fixed the property tax for the next fifteen years.
Source: Wiktionary
In*dic"tion, n. Etym: [L. indictio: cf. F. indiction. See Indict,
Indite.]
1. Declaration; proclamation; public notice or appointment. [Obs.]
"Indiction of a war." Bacon.
Secular princes did use to indict, or permit the indiction of, synods
of bishops. Jer. Taylor.
2. A cycle of fifteen years.
Note: This mode of reckoning time is said to have been introduced by
Constantine the Great, in connection with the payment of tribute. It
was adopted at various times by the Greek emperors of Constantinople,
the popes, and the parliaments of France. Through the influence of
the popes, it was extensively used in the ecclesiastical chronology
of the Middle Ages. The number of indictions was reckoned at first
from 312 a. d., but since the twelfth century it has been reckoned
from the birth of Christ. The papal indiction is the only one ever
used at the present day. To find the indiction and year of the
indiction by the first method, subtract 312 from the given year a.
d., and divide by 15; by the second method, add 3 to the given year
a. d., and the divide by 15. In either case, the quotient is the
number of the current indiction, and the remainder the year of the
indiction. See Cycle of indiction, under Cycle.
Source: Webster’s Unabridged Dictionary 1913 Edition