# tractrix

> English word · Noun

## Definitions
1. A curve that satisfies the following property: that segment of the tangent line that lies between the point of tangency and a fixed line has length independent of the point of tangency chosen.

## Etymology
Formed after tractor, as if from a Latin *tractrīx (from trahō (“to pull”) + -trīx).

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