Organize  v. (also -ise) (-zing or -sing) 1 a give an orderly structure to, systematize. B make arrangements for (a person or oneself). 2 initiate, arrange for. 3 (often absol.) A enlist (a person or group) in a trade union, political party, etc. B form (a trade union etc.). 4 (esp. As organized adj.) Make organic; make into living tissue.  organizer n. [latin: related to *organ]