noun
epitrochoid
ep-ih-TROH-koyd
Epitrochoid (noun) means a curve traced by a fixed point on a circle as that circle rolls around the outside of another circle. Example: “The outline of a Wankel engine's chamber is an epitrochoid.”
noun
1
A curve traced by a fixed point on a circle as that circle rolls around the outside of another circle.
"The outline of a Wankel engine's chamber is an epitrochoid."
"A toy that draws looping patterns can trace an epitrochoid."
"The teacher showed how an epitrochoid forms as one circle rolls around another."
How to use epitrochoid
Learner’s notesIn plain EnglishA looping curve made by a point on a circle rolling around another circle.
When to use it
It is a technical term used in geometry and engineering.
Common pairings
epitrochoid curve
draw an epitrochoid
epitrochoid equation
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The outline of a Wankel engine's chamber is an _____.
Etymology
The word was formed in English from the prefix epi- and the noun trochoid.
Rhymes for epitrochoid
See all rhymes for epitrochoid →Frequently asked questions
What is an epitrochoid?
It is the looping path a point on a rolling circle makes as that circle goes around the outside of a second, fixed circle.
What is an example of an epitrochoid?
The shape found in the Wankel engine is an example.
What is the plural of epitrochoid?
The plural is epitrochoids.
What is the meaning of epitrochoid?
"epitrochoid" (noun) means a curve traced by a fixed point on a circle as that circle rolls around the outside of another circle.
