Other Word Forms
Origin of quaternion
- Middle English quaternioun from Late Latin quaterniō quaterniōn- from Latin quaternī by fours from quater four times kwetwer- in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
- From Middle English quaternioun, from Late Latin quaterniō, from quaternÄ« (ablative form of quater, “four times") + -iōn, “-ion".