directrix (English, noun)
expansion: directrix (plural directrixes or directrices)
Senses:
glosses: A female who directs; a directress.
topics: geometry
mathematics
sciences
glosses: 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.
Forms:
form: directrixes
tags: plural
form: directrices
tags: plural