ALL meanings of directrix
di·rec·trix
D d - noun directrix A fixed line used in describing a curve or surface. 1
- noun plural directrix Geometry. a fixed line used in the description of a curve or surface. 1
- noun plural directrix Archaic. a directress. 1
- noun directrix a fixed reference line, situated on the convex side of a conic section, that is used when defining or calculating its eccentricity 0
- noun directrix a directress 0
- noun directrix a woman director 0
- noun directrix a fixed line associated with a conic section and its focus and eccentricity 0
- noun directrix the curve that bounds the base of a cone or cylinder 0
- noun directrix A female who directs; a directress. 0
- noun directrix (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. 0