4 KudoZ points awarded for this answer. Comment: "Great answer, but I ultimately went with "decentralized". Here's why: 1) As far as I can tell, "devolved body" is used exclusively for national legislatures (Scottish, Welsh) in the U.K. If "devolved body" is used in other contexts, I'd love to have references. 2) "Deconcentrated" might have been alright, but its meaning isn't necessarily clear to a U.S. audience of non-specialists. 3) "Decentralized" can be, as Oscar says, geographical, but it can also be fiscal, administrative, etc. Since the intended audience for my document was computer programmers and statisticians, not lawyers, I went with the more readily understandable "decentralization". "