director circles

di·rec·tor cir·cles
UK/dɪˌɹɛk.tə ˈsɜː.kəlz/UK/dɪˌɹek.tə ˈsɜː.kəlz/UK/daɪ̯-/UK/dʌɪ̯-/

A form of director circle — A circle formed by all 90° crossings of tangents of an ellipse or hyperbola.

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Meanings

noun
  1. pluralplural of director circle
Cite this entry
APA

director circles. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/director%20circles

MLA

“director circles.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/director%20circles. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “director circles,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/director%20circles.

Source: director circles on Wiktionary, CC BY-SA 4.0.