WordReference Random House Unabridged Dictionary of American English © 2026
cog•na•tion
(kog nā′shən),USA pronunciation n.
- cognate relationship.
- Latin cognātiōn- (stem of cognātiō) kinship, equivalent. to cognāt(us) cognate + -iōn- -ion
- Anglo-French, Old French)
- Middle English cognacioun (1350–1400