The story
- Latin · derived fromtrēdecim
- Latin · derived fromtrēdecennium
- English todaytredecennial
Latin trēdecennium + English -al or Latin trēdecim + English -ennial
Etymology from Wiktionary, CC BY-SA 4.0.
tredecennial
Today it means: A period of thirteen years. Full definition →
Latin trēdecennium