1 : to happen at the same time
2 : to express agreement [he shall have power…to make treaties, provided two-thirds of the Senators present "U.S. Constitution art. II"]
: to join in an appellate decision compare dissent NOTE: A judge or justice may concur with the decision of the court but not agree with the reasons set forth in the opinion. Often a separate opinion is written in such a case.
Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.