coöperative

from The Century Dictionary.

• Operating, laboring, or striving jointly for the attainment of certain ends.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Operating jointly to the same end.
• adjective a society established on the principle of a joint-stock association, for the production of commodities, or their purchase and distribution for consumption, or for the borrowing and lending of capital among its members.
• adjective a store established by a coöperative society, where the members make their purchases and share in the profits or losses.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective Alternative spelling of cooperative.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adjective done with or working with others for a common purpose or benefit
• adjective willing to adjust to differences in order to obtain agreement
• adjective involving the joint activity of two or more
• noun an association formed and operated for the benefit of those using it
• noun a jointly owned commercial enterprise (usually organized by farmers or consumers) that produces and distributes goods and services and is run for the benefit of its owners