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epicycle

ep·i·cy·cle

epicycle

 
pronunciation:
e p saI kl
features:
Word Combinations (noun), Word Parts
part of speech: noun
definition 1: in early astronomy, a small circle whose center moves along the circumference of a larger circle.
definition 2: in geometry, a small circle that rolls on the inside or the outside of the circumference of a larger circle.
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derivation: epicyclic (adj.)
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