conic section directrix (English, noun)
expansion: conic section directrix (plural conic section directrixes or conic section directrices)
Senses:
topics: geometry
mathematics
sciences
glosses: A fixed straight line that, along with the focus, defines the set of points on a conic section.
Forms:
form: conic section directrixes
tags: plural
form: conic section directrices
tags: plural