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Synonyms

firmament

American  
[fur-muh-muhnt] / ˈfɜr mə mənt /

noun

  1. the vault of heaven; sky.


firmament British  
/ ˈfɜːməmənt, ˌfɜːməˈmɛntəl /

noun

  1. the expanse of the sky; heavens

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • firmamental adjective

Etymology

Origin of firmament

1250–1300; Middle English < Late Latin firmāmentum sky, Latin: support, prop, stay, equivalent to firmā ( re ) to strengthen, support ( firm 2 ) + -mentum -ment

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Taix’s history, and its spot in the city’s cultural firmament, cannot be denied.

From Los Angeles Times • Mar. 26, 2026

A century on, the place of all three in the firmament is secure.

From The Wall Street Journal • Nov. 14, 2025

The cast - and the status of the 1922 original in the film firmament - means Eggers' movie had achieved a cult-like following even before its release.

From BBC • Dec. 31, 2024

“Looking at nature without fungi is like trying to diagnose a disease without doing a blood test. Fungi are the firmament of life on Earth. They make systems ecosystems.”

From Salon • Oct. 18, 2024

He bathed in the fresh cold water at the river’s edge and lay on his back under the sun, trying to fathom the firmament.

From "Abel's Island" by William Steig