hyperboloid

English

Etymology

hyperbola +‎ -oid

Noun

an hyperboloid of one sheet

hyperboloid (plural hyperboloids)

1. A particular surface in three-dimensional Euclidean space, the graph of a quadratic with all three variables squared and their coefficients not all of the same sign.

Usage notes

• If the hyperboloid is a connected surface, it is said to be of one sheet; otherwise, it has two components and is said to be of two sheets.
• Like many terms that start with a non-silent h but have emphasis on their second syllable, some people precede hyperboloid with an, others with a.

Hypernyms

• quadric surface, quadric

Derived terms

• hyperboloidal

Translations

surface in three-dimensional space

• Estonian: hüperboloid
• Finnish: hyperboloidi
• Icelandic: breiðbogaflötur m
• Kazakh: гиперболоид (giperboloid)
• Portuguese: hiperboloide

Further reading

• hyperboloid on Wikipedia.Wikipedia