Added 10 October 2026 paraboloid noun Categories: Describing WordsRare Words noun ! Definition from WordNet 3.1, Princeton University. More about paraboloid at Wordnik → Where our words come from → A surface having parabolic sections parallel to a single coordinate axis and elliptic sections perpendicular to that axis. Related Words: hyperbolicparabolaellipsoidparabolizationelliptoidtoroid Back to today's word