WordReference Random House Unabridged Dictionary of American English © 2026
di•rec•trix
(di rek′triks, dī-),USA pronunciation n., pl. di•rec•trix•es, di•rec•tri•ces
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(di rek′tri sēz′, dī-, dī′rek trī′sēz).USA pronunciation
- Mathematics[Geom.]a fixed line used in the description of a curve or surface. See diag. under parabola.
- Pronouns[Archaic.]a directress.
- Neo-Latin; see direct, -trix
- 1615–25
- See -trix.
'directrix' also found in these entries (note: many are not synonyms or translations):