—v.t. 1. to form as or into a whole consisting of interdependent or coordinated parts, esp. for united action: to organize a committee. 2. to systematize: to organize the files of an office. 3. to give organic structure or character to: to organize the elements of a composition. 4. to enlist or attempt to enlist into a labor union: to organize workers. 5. to enlist the employees of (a company) into a labor union; unionize: to organize a factory. 6. Informal.to put (oneself) in a state of mental competence to perform a task: We can't have any slip-ups, so you'd better get organized.
—v.i. 1. to combine in an organized company, party, or the like.
2. to form a labor union: Management resisted all efforts to organize. 3. to assume organic structure. Also,esp. Brit.,or'gan•ise".