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| Me·ton·ic cy·cle [ mə tònnik sk'l ] (plural Me·ton·ic cy·cles) |
noun |
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| Definition: |
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lunar cycle lasting 19 years: a cycle of 235 lunar months, after which the phases of the Moon occur on the same days of the month as they did at the start of the cycle
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| [Late 17th century. After Metōn, 5th century bc Athenian astronomer] |
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