What is "concertation"

Concertation \Con`cer*ta"tion\, n. [L. concertatio.] Strife; contention. [Obs.]
--Bailey.

n. 1 A form of dialogue and co-decision, implying the mutual exchange of information, open discussion and knowledge sharing, and the signature of operational agreements between public administrations and/or with representatives of the private sector. 2 (context obsolete English) strife, contention.