PARTNERSHIP: One of the three basic forms of business organization (the other two are corporation and proprietorship). A partnership is a business that's owned and operated more or less equally by two or more people. The owners and the business are legally considered one and the same. As such, each owner has unlimited liability, which means that an owner is held personally responsible for any and all of the business's debts, including those made by a partner. See also | firm | business | corporation | proprietorship | limited liability | unlimited liability | small business |