pseudosphere

[ soo-duh-sfeer ]
/ ˈsu dəˌsfɪər /

noun Geometry.

a surface generated by revolving a tractrix about its asymptote.

Origin of pseudosphere

First recorded in 1885–90; pseudo- + sphere

Related forms

pseu·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