# pseudosphere

> English word · Noun

## Definitions
1. A surface generated by rotating a tractrix about its asymptote; a tractricoid
2. Any of various surfaces with constant negative Gaussian curvature.

## Etymology
From pseudo- + sphere.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/pseudosphere