paraboloid

noun

quadric surface of special kind

Wiktionary

noun

Etymology: Etymology tree English parabola Ancient Greek -ο- (-o-)der. Latin -o- Proto-Indo-European *weyd- Proto-Indo-European *-os Proto-Indo-European *wéydos Proto-Hellenic *wéidos Ancient Greek εἶδος (eîdos) Proto-Indo-European *-os Proto-Indo-European *-ēs Ancient Greek -ης (-ēs) Ancient Greek -ειδής (-eidḗs) Latin -oīdēslbor. English -oid English paraboloid From parabola + -oid.

Short for elliptic paraboloid
Short for hyperbolic paraboloid