require

v. (-ring) 1 need; depend on for success or fulfilment (the work requires patience). 2 lay down as an imperative (required by law). 3 command; instruct (a person etc.). 4 order; insist on (an action or measure).  requirement n. [latin requiro -quisit- seek]

v. t. To demand; to insist upon having; to claim as by right and authority; to exact; as, to require the surrender of property.