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]
On November 27, 1821, the Alabama State legislature passed an Act that altered the boundary of Limestone County include the area east of the mouth of the Elk River with the Tennessee River. At the time, that area was a part of Lauderdale County.