to order or select in a random manner, as in a sample or experiment, esp. in order to reduce bias and interference caused by irrelevant variables; make random.
ran·dom·ize (rān'də-mīz') tr.v.
ran·dom·ized, ran·dom·iz·ing, ran·dom·iz·es To make random in arrangement, especially in order to control the variables in an experiment. ran'dom·i·za'tion (-də-mĭ-zā'shən) n., ran'dom·iz'er n.