astroid
English
Etymology
Ancient Greek ἄστρον (ástron, “a star”) + εἶδος (eîdos, “form, likeness”).
Noun
astroid (plural astroids)
- (geometry) A hypocycloid with four cusps.
Related terms
Translations
hypocycloid with four cusps
See also
Further reading
- “astroid”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.
- “astroid”, in The Century Dictionary […], New York, N.Y.: The Century Co., 1911, →OCLC.