The story
Etymology from Wiktionary, CC BY-SA 4.0.
sesquiannual
Today it means: Occurring once every one and a half years (i.e. once every 18 months). Full definition →
Today it means: Occurring once every one and a half years (i.e. once every 18 months). Full definition →
Etymology from Wiktionary, CC BY-SA 4.0.