new moon


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 beginning of each Jewish month marked by a special liturgy

Examples of new moon in a Sentence

Recent Examples on the Web

Remember, new moons occur when the sun and moon occupy the same sign, so during this lunation, there is nocturnal visibility. Aliza Kelly Faragher, Allure, "What October's Aries Horoscope Means for You," 30 Sep. 2018 The International Astronomical Union has confirmed the discovery of 10 new moons, bringing the grand total to 79. Brian Resnick, Vox, "Astronomers discovered 10 new moons of Jupiter. Where have they been hiding?," 17 July 2018 On Wednesday, November 7, the new moon in Scorpio inspires you to ruminate on this concept. Aliza Kelly Faragher, Allure, "What November's Capricorn Horoscope Means for You," 28 Oct. 2018 The new moon is perfectly partnered with another huge celestial shift: On Thursday, November 8, Jupiter changes signs. Aliza Kelly Faragher, Allure, "What November's Taurus Horoscope Means for You," 28 Oct. 2018 The stellar show is falling during a new moon, meaning the sky is darker and the meteors will be more easily visible. Sara Rodrigues, House Beautiful, "How To See The First Meteor Shower Of 2019," 2 Jan. 2019 This weekend will also see a new moon, so the skies will be extra dark to spot the streaks of light across the sky. Brian Resnick, Vox, "The Perseid meteor shower peaks this weekend. Here’s how to catch the spectacular show.," 8 Aug. 2018 Astronomers searching for a planet beyond Pluto discovered instead a dozen new moons orbiting Jupiter. Robert Lee Hotz, WSJ, "The Hunt for ‘Planet Nine’ Unearths 12 New Moons Around Jupiter," 17 July 2018 June brings sweet romance as Mars joins up with a new moon to sweep you off your feet and September will bring deeper commitment. Rebecca Gordon, Harper's BAZAAR, "Your Horoscope For the Year Ahead," 29 Dec. 2016

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.

See More

First Known Use of new moon

before the 12th century, in the meaning defined at sense 1

Keep scrolling for more

Learn More about new moon

Statistics for new moon

Look-up Popularity

Time Traveler for new moon

The first known use of new moon was before the 12th century

See more words from the same century

Keep scrolling for more

More Definitions for new moon

new moon


English Language Learners Definition of new moon

: the moon when it is completely dark

new moon


Kids Definition of new moon

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

Keep scrolling for more

More from Merriam-Webster on new moon

Rhyming Dictionary: Words that rhyme with new moon

Spanish Central: Translation of new moon

Nglish: Translation of new moon for Spanish Speakers Encyclopedia article about new moon

Comments on new moon

What made you want to look up new moon? Please tell us where you read or heard it (including the quote, if possible).


a sum of money that is sent as a payment

Get Word of the Day daily email!

Test Your Vocabulary

Time Traveler Quiz: Which Word Came First?

  • time traveler quiz which word came first
  • Which came first?
True or False

Test your knowledge - and maybe learn something along the way.

Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!