Entry 2 senses · 2 variants Webster, 1913 contemporize · IPA v. i. v. t. 01 v. i. to happen at the same time. 1. to happen at the same time. Syn. co-occur. 02 v. t. to arrange or represent events so that they co-occur. 1. to arrange or represent events so that they co-occur. Syn. synchronize.