noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Synonym of quadrennium: A four-year period, particularly (historical) those used in ancient Egyptian and Greek astronomical calculations.

Synonyms

All synonyms

quadrennium

Etymology

From Late Latin tetraeteris, from Ancient Greek τετραετηρίς (tetraetērís), from τετρα- (tetra-, “four”) + ἔτος (étos, “year”).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.