pseudosphere

[soo-duh-sfeer]

noun Geometry.

a surface generated by revolving a tractrix about its asymptote.

Origin of pseudosphere

First recorded in 1885–90; pseudo- + sphere
Related formspseu·do·spher·i·cal [soo-duh-sfer-i-kuh l, -sfeer-] /ˌsu dəˈsfɛr ɪ kəl, -ˈsfɪər-/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019