Ben·gha·zi [ ben gzee, beng gzee ] or Ben·ga·si [ ben gzee, beng gzee ] or Ban·ghā·zī [ ben gzee, beng gzee ]city and port in northeastern Libya on the gulf of Sidra. It is near the site of the ancient Greek colony of Euhesperides. Population: 650,600 (2007 estimate).