organize

Concise Oxford English Dictionary © 2008 Oxford University Press:
organize /ˈɔːɡənʌɪz/ (or organise)

▶verb

• 1 arrange systematically; order.

• 2 make arrangements or preparations for.

• 3 form (people) into a trade union or other political group.

– derivatives
organizable adjective,
organizer noun.

– origin ME: from med. L. organizare, from L. organum (see organ).