The story
From octaeteris (“eight-year period”) + -ic.
Etymology from Wiktionary, CC BY-SA 4.0.
octaeteric
Today it means: Synonym of octennial (“related to or characterized by an eight-year period”) Full definition →
Today it means: Synonym of octennial (“related to or characterized by an eight-year period”) Full definition →
From octaeteris (“eight-year period”) + -ic.
Etymology from Wiktionary, CC BY-SA 4.0.