con·cur·rent /kən-'kər-ənt/ adj
1: occurring, arising, or operating at the same time often in relationship, conjunction, association, or cooperation
the power of taxation in the general and state governments is acknowledged to be concurrent — McCulloch v. Maryland, 17 U.S. 316 (1819)
2: insuring the same property to the same extent under identical terms
concurrent fire policies
3: exercised over the same matter or area by two different authorities see also concurrent jurisdiction at jurisdiction; concurrent power at power 2a
con·cur·rent·ly adv
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.