full moon

noun

: the moon with its whole apparent disk illuminated

Examples of full moon in a Sentence

Recent Examples on the Web

The gravitational pull of both the Moon and the Sun combine around a full moon to make the tides larger. — Brian Tang, The Conversation, 30 Sep. 2026

California closed out September with the harvest moon, the full moon that is closest to the autumnal equinox. — Alexiah Syrai Olsen, Sacbee.com, 30 Sep. 2026

Observing tips October's full moon phase is a great time to photograph the lunar disk using a DSLR camera and a telephoto lens, as its surface is temporarily free from the shadows that mark it during the surrounding moon phases. — Anthony Wood, Space.com, 28 Sep. 2026

This full moon could also bring news regarding an immigration matter, or show up as a peak travel experience that leaves a weird taste in your mouth. — Steph Koyfman, Condé Nast Traveler, 28 Sep. 2026

Word History

First Known Use

before the 12th century, in the meaning defined above

Rhymes for full moon

• attune
• baboon
• balloon
• bassoon
• buffoon
• cartoon
• cocoon
• festoon
• gaboon
• harpoon
• immune
• impugn

Kids Definition

full moon

noun

: the moon with its whole disk lighted