1. A organization that has not been formed into a legal corporation.
2. Not combined or mixed with something else. Thus, in constitutional law, an unincorporated amendment of the U.S. Constitution is one that only applies to the federal government, and does not limit the power of state governments. Such amendments have not been incorporated because their language has not been recognized as being mixed in to the language and intent of the Fourteenth Amendment.
"[Under] the doctrine of territorial incorporation . . . the [U.S.] Constitution applies in full in incorporated Territories surely destined for statehood but only in part in unincorporated Territories."