Complex sentence: Gendo's last names (Rokubungi and Ikari) mean "sextant" and "anchor" in Japanese, respectively; his first name was taken from another anime project prior to "Evangelion" that was aborted.
Split into simpler sentences: Gendo's last names (Rokobungi and Ikari) mean "sextant" and "anchor" in Japanese, respectively. His first name was taken from another anime project prior to "Evangelion" that was aborted.