Allodium (capital A) is a Sovereign Cooperative. What's that mean? Let's ask Google:
Allodium (lowercase a): land which is the absolute property of the owner, real estate held in absolute independence, without being subject to any rent, service or acknowledgement to a superior.
Sovereign: acting or done independently and without outside interference
Cooperative: organization that is owned and run jointly by its members, who share the profits or benefits
So, Allodium (capital a) is an independent group of members who hold land and are not subject to any rend or superior, and who share in the benefits of said Independent Organization.
Or, more Simply,
Allodium is a Sovereign Cooperative.
