directrix

English

English Wikipedia has an article on:

directrix

Wikipedia

Etymology

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

Pronunciation

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Noun

directrix (plural directrixes or directrices)

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

Derived terms

• conic section directrix
• graph directrix
• ruled surface directrix

Translations

a line used to define a curve or surface

Dutch: richtlijn (nl) m or f Finnish: johtosuora French: directrice (fr) f Polish: kierownica (pl) f Spanish: directriz (es) f Tamil: இயக்குவரை (ta) f (iyakkuvarai)

a female who directs — see directress

References

• “directrix, n.”, in OED Online ⁠, Oxford: Oxford University Press, launched 2000.

Anagrams

• creditrix