directrix

English dictionary entry

Meanings

noun
  1. Female equivalent of director.
  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.

Pronunciation

dĭ-rĕk′trĭks dī- /dɪˈɹɛk.tɹɪks/ /-ˈɹek-/ /daɪ̯-/ /dʌɪ̯-/ LL-Q1860 (eng)-Flame, not lame-directrix.wav /dɪˈɹek.tɹɪks/ /dɑe̯-/ /dəˈɹek.tɹəks/ /dʌi̯-/ /dəi̯-/ /ɖɪˈɾɛ(ː)k.ʈɾɪks/ /ɖəj-/ /ɖɑːj-/

Word forms

directrix directrixes directrices directrice

Etymology

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

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