supermoon

noun

su·​per·​moon ˈsü-pər-ˌmün 

plural supermoons

: a full moon occurring when the moon is at or near the closest point in its orbit

A supermoon … occurs when the moon is full within 24 hours of being at its closest point to the Earth in its orbit.

—Kaleigh Rogers

Visible supermoons appear 14% bigger and 30% brighter than full moons that occur at the farthest point in the moon's orbit.

—Karen Hao

As the first and only supermoon of 2017 rose high into the sky this Sunday (Dec. 3), astrophotographers seized the opportunity to shoot the moon in all its bigger-than-usual glory.

—Hanneke Weitering

Examples of supermoon in a Sentence

Recent Examples on the Web

When To See The ‘snow Moon’ Occult Regulus Just a day after the full wolf supermoon, the near-full moon will occult Regulus for about an hour, as seen from the eastern half of North America. —Jamie Carter, Forbes.com, 29 Jan. 2026

These include three supermoons, two micromoons, a blood moon (total lunar eclipse) and a blue moon. —Alexis Simmerman, Austin American Statesman, 29 Jan. 2026

No, the snow moon is not a supermoon. —Jenna Prestininzi, Freep.com, 28 Jan. 2026

No, February's full moon is not a supermoon. —Cailey Gleeson, jsonline.com, 27 Jan. 2026

Word History

First Known Use

1979, in the meaning defined above

Rhymes for supermoon

• afternoon
• forenoon
• honeymoon
• laocoon
• opportune
• pantaloon
• picayune
• tablespoon
• attune
• baboon
• balloon
• bassoon