new moon

noun
Updated on: 8 Nov 2017

Definition of new moon

1 :the moon's phase when it is in conjunction with the sun so that its dark side is toward the earth; also :the thin crescent moon seen shortly after sunset for a few days after the actual occurrence of the new moon phase
2 :the first day of each Jewish month marked by a special liturgy

Recent Examples of new moon from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'new moon.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of new moon

before 12th century


NEW MOON Defined for English Language Learners

new moon

noun

Definition of new moon for English Language Learners

  • : the moon when it is completely dark


NEW MOON Defined for Kids

new moon

noun

Definition of new moon for Students

1 :the moon's phase when its dark side is toward the earth
2 :the thin curved outline of the moon seen shortly after sunset for a few days after the new moon


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