英语词汇“epicycle”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-新都网

ep·i·cy·cle

(ĕpĭ-sī′kəl)

1. In Ptolemaic cosmology, a small circle, the center of which moves on the circumference of a larger circle at whose center is the earth and the circumference of which describes the orbit of one of the planets around the earth.

2. Mathematics A circle whose circumference rolls along the circumference of a fixed circle, thereby generating an epicycloid or a hypocycloid.

[Middle English epicicle, from Late Latin epicyclus, from Greek epikuklos : epi-, epi- + kuklos, circle; see k^wel-¹ in the Appendix of Indo-European roots.]

ep′i·cyclic (-sĭklĭk, -sīklĭk) adj.

单词	epicycle
释义	ep·i·cy·cle (ĕpĭ-sī′kəl) n. 1. In Ptolemaic cosmology, a small circle, the center of which moves on the circumference of a larger circle at whose center is the earth and the circumference of which describes the orbit of one of the planets around the earth. 2. Mathematics A circle whose circumference rolls along the circumference of a fixed circle, thereby generating an epicycloid or a hypocycloid. [Middle English epicicle, from Late Latin epicyclus, from Greek epikuklos : epi-, epi- + kuklos, circle; see k^wel-¹ in the Appendix of Indo-European roots.] ep′i·cyclic (-sĭklĭk, -sīklĭk) adj.
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