Lunation definitions

lo͝o-nā'shən
The time that elapses between successive new moons, averaging 29 days, 12 hours, 44 minutes; a lunar month.
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A month of approximately 29.53 days, measured from a lunar phase until the return of that same phase. On average, the number of days between Full Moons is about 29.5306 days. The actual number of days may differ from the average number by more than a half day. From one Full Moon to the next, the number of days in one lunation can vary between 29.272 and 29.833 days.
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The irregular period from one new moon until the next.
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Origin of lunation

Middle English lunacioun from Medieval Latin lūnātiō lūnātiōn- from Latin lūna lunar

Sentence Examples

  • The solar day, the solar year, and the lunar month, or lunation, may therefore be called the natural divisions of time.

  • As the /see' is longer than a synodic revolution of the moon, the sun cannot arrive twice at a chung-ki during the same lunation; and as there are only twelve tsee, the year can contain only twelve months having different names.

  • It must happen sometimes that in the course of a lunation the sun enters into no new sign; in this case the month is intercalary, and is called by the same name as the preceding month.

  • If The Last Lunation Of Any Year Ends, For Example, On The 2Nd Of December, The New Moon Falls On The 3Rd; And The Moon'S Age On The 31St, Or At The End Of The Year, Is Twenty Nine Days.

  • Now That Lunation Having Commenced On The 3Rd Of December, And Consisting Of Thirty Days, Will End On The 1St Of January.

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Words near lunation in the Dictionary