noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A female who directs; a directress.
2. 2
   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.

Synonyms

All synonyms

airlineaxisbeelinechorddiagonaldiameter

Etymology

Learned borrowing from Latin dīrēctrīx. By surface analysis, direct + -trix.

Related phrases

conic section directrixgraph directrixruled surface directrix

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.