Meanings
noundirector circle (plural director circles)
plural director circles
- geometryA circle formed by all 90° crossings of tangents of an ellipse or hyperbola.
Synonyms: Fermat-Apollonius circle, orthoptic circle
Synonyms & antonyms
nounA circle formed by all 90° crossings of tangents of an ellipse or hyperbola.
Translations
Japanese 準円
- 準円 (jun'en)circle formed by all 90° crossings of tangents of an ellipse or hyperbola
Portuguese círculo diretor
- círculo diretorcircle formed by all 90° crossings of tangents of an ellipse or hyperbola
Spanish círculo director
- círculo directorcircle formed by all 90° crossings of tangents of an ellipse or hyperbola
Cite this entry
APA
director circle. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/director%20circle
MLA
“director circle.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/director%20circle. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “director circle,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/director%20circle.
Source: director circle on Wiktionary, CC BY-SA 4.0.