I. cog ‧ nate 1 /ˈkɒɡneɪt $ ˈkɑːɡ-/ BrE AmE adjective technical
[ Date: 1300-1400 ; Language: Latin ; Origin: cognatus , from co- ( ⇨ ↑ co- ) + gnatus 'born' ]
cognate words or languages have the same origin
II. cognate 2 BrE AmE noun [countable] technical
a word in one language that has the same origin as a word in another language:
The German ‘Hund’ is a cognate of the English ‘hound’.