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]
Between 1822 and 1833, Columbia was the county seat of old Henry County, which then comprised portions of present-day Covington, Dale, Barbour, Coffee, Crenshaw, Bullock, Geneva, and Houston counties making it â geographically â the largest county in Alabama.