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Definition of astroid in English: astroidnoun ˈastrɔɪdˈastroid Mathematics A hypocycloid with four cusps (like a square with concave sides). Example sentencesExamples - The astroid was first discussed by Johann Bernoulli in 1691-92.
- An astroid is a specialized case of the general hypocycloid family of curves.
- The cycloidal curves, including the astroid, were discovered by Roemer (1674) in his search for the best form for gear teeth.
- The astroid is a famous curve that arises in an interesting way.
- The caustic of the tricuspoid, where the rays are parallel and in any direction, is an astroid.
Definition of astroid in US English: astroidnounˈastroid Mathematics A hypocycloid with four cusps (like a square with concave sides). Example sentencesExamples - The astroid was first discussed by Johann Bernoulli in 1691-92.
- The caustic of the tricuspoid, where the rays are parallel and in any direction, is an astroid.
- An astroid is a specialized case of the general hypocycloid family of curves.
- The cycloidal curves, including the astroid, were discovered by Roemer (1674) in his search for the best form for gear teeth.
- The astroid is a famous curve that arises in an interesting way.
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