Definition of astroid in English:

astroid

noun ˈastrɔɪdˈastroid

Mathematics

A hypocycloid with four cusps (like a square with concave sides).
〔数学〕星形线
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:

astroid

nounˈastroid

Mathematics

A hypocycloid with four cusps (like a square with concave sides).
〔数学〕星形线
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.

单词	astroid
释义	Definition of astroid in English: astroid noun ˈastrɔɪdˈastroid Mathematics A hypocycloid with four cusps (like a square with concave sides). 〔数学〕星形线 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: astroid nounˈastroid Mathematics A hypocycloid with four cusps (like a square with concave sides). 〔数学〕星形线 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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