co·op·er·a·tive (kō-ŏpər-ə-tĭv, -ə-rātĭv, -ŏprə-)
1. Done in cooperation with others: a cooperative effort.
2. Marked by willingness to cooperate; compliant: a cooperative patient.
3. Of, relating to, or formed as an enterprise or organization jointly owned or managed by those who use its facilities or services: a cooperative department store; cooperative apartment buildings.
1. An enterprise or organization that is owned or managed jointly by those who use its facilities or services.
a. A building or complex in which the residents buy shares of stock in a building corporation and are given a lease to a specific apartment.
b. An apartment in such a building or complex.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.