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]
Selma, Alabama is the county seat of Dallas County and was established in 1865 when the the county seat was moved from Cahaba, Alabama which also served as the state capital for a brief period. Dallas County is bordered by Autauga, Chilton, Lowndes, and Perry counties. The current population of Dallas County is just under 50,000 and spans 980 square miles. We are proud of our heritage and look forward to a bright future as a key city in the heart of the Alabama Blackbelt area.