Related Overviews


'directrix' can also refer to...


More Like This

Show all results sharing this subject:

  • Physics


Show Summary Details

Quick Reference

1. A plane curve defining the base of a cone.

2. A straight line from which the distance to any point on a conic is in a constant ratio to the distance from that point to the focus.

Subjects: Physics.

Reference entries

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.