directrix

Hello, you have come here looking for the meaning of the word directrix. In DICTIOUS you will not only get to know all the dictionary meanings for the word directrix, but we will also tell you about its etymology, its characteristics and you will know how to say directrix in singular and plural. Everything you need to know about the word directrix you have here. The definition of the word directrix will help you to be more precise and correct when speaking or writing your texts. Knowing the definition ofdirectrix, as well as those of other words, enriches your vocabulary and provides you with more and better linguistic resources.

English

English Wikipedia has an article on:
Wikipedia

Etymology

From Latin directrix; equivalent to direct +‎ -trix.

Noun

In this picture of an ellipse, a parabola, and an hyperbola, the black line is their shared directrix.

directrix (plural directrixes or directrices)

  1. A female who directs; a directress.
  2. (geometry) A line used to define a curve or surface; especially a line, the distance from which a point on a conic has a constant ratio to that from the focus.

Derived terms

Translations

Anagrams