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epicycle

noun

/ˈɛpɪˌsaɪkl/

Meaning

a small circle whose center moves around the circumference of a larger one, used in ancient astronomy

The concept of the epicycle was used to explain planetary motion.

orbit, circle, revolution, rotation

line, straight path

planetary epicycle, motion epicycle, Ptolemaic epicycle

great depth of insight, knowledge, or emotion

security or protection against a loss or other financial burden; compensation for damage or loss

a group of stars forming a recognizable pattern in the night sky

A comparison between two things for the purpose of explanation or clarification.

The development of agricultural ecosystems intended to be sustainable and self-sufficient.

a drawing that shows the features of an area of land or sea