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]
Alabama State Route 160 passes through the center of the town, leading 5 miles (8 km) southwest to Interstate 65 north of Warrior, and northeast 13 miles (21 km) to Cleveland, Alabama. According to the U.S. Census Bureau, the town of Hayden has a total area of 1.1 square miles (2.9 km 2), all of it land.