from The American HeritageĀ® Dictionary of the English Language, 4th Edition

  • n. See lunar month.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. a month of approximately 29.53 days, measured from a lunar phase until the return of that same phase. The long-term average duration is 29.530 588 days (29 d 12 h 44 min 2.8 s), or about 29 Ā½ days.
  • n. the variably cyclic period from one new moon until the next.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the period between successive new moons (29.531 days)


synodic + month (Wiktionary)


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