Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps


Noun: directrix (directrices)  di'rek-triks or dI'rek-triks
  1. A line along which a point in another line moves, or which in any way governs the motion of the point and determines the position of the curve generated by it; the line along which the generatrix moves in generating a surface
     
  2. A straight line so situated with respect to a conic section that the distance of any point of the curve from it has a constant ratio to the distance of the same point from the focus

Derived forms: directrices

Encyclopedia: Directrix

Nearest

Director of Central Intelligence
director of research
directorate
Directorate for Inter-Services Intelligence
director-general
directorial
directorship
director-stockholder relation
directory
directress
directrix
direful
direfully
direly
diremption
dirge
dirham
dirigible
dirigisme
dirigiste
diriment impediment