hyperboloid

noun

hy·per·bo·loid hī-ˈpər-bə-ˌlȯid

: a quadric surface whose sections by planes parallel to one coordinate plane are ellipses while those sections by planes parallel to the other two are hyperbolas if proper orientation of the axes is assumed

hyperboloidal

(ˌ)hī-ˌpər-bə-ˈlȯi-dᵊl

adjective

Examples of hyperboloid in a Sentence

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Not one but two tall monoliths now overlook the harbor: William Zeckendorf’s rooftop airport covers a substantial fraction of Manhattan’s western edge, and I.M. Pei’s pinch-waisted hyperboloid rises a hundred stories above Grand Central Terminal. —