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Pronunciation varies by accent · noun
(geometry) The locus of a point on the circumference of a circle that rolls without slipping on the circumference of another circle..
Use epicycloid when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Epicycloid means (geometry) The locus of a point on the circumference of a circle that rolls without slipping on the circumference of another circle..
Common synonyms include hypocycloid.
The opposite depends on the specific sense.
Use epicycloid where its definition matches the intended context.
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