Of or relating to the replacement of three of several atoms or groups in a compound, such as an amine in which three valences of the functional group are taken by carbon atoms. c. Of or relating to salts of acids containing three replaceable hydrogen atoms.
Hayden is a town in Blount County, Alabama, United States. At the 2010 census the population was 444.[3]
Origin of the name Hayden: Transferred use of the English surname derived from several place-names. It is from the Old English elements hÄg (hay) and denu (valley); hÄg (hay) and dun (hill); and hege (hedge) and dun (hill).