expanse

noun

ex·​panse ik-ˈspan(t)s 

1

: firmament

2

: great extent of something spread out

an expanse of calm ocean

Synonyms of expanse

• expansion
• stretch
• length

Examples of expanse in a Sentence

The explorer gazed across the vast Arctic expanse.

the great explorers who crossed the vast expanses of the seven seas in small ships

Recent Examples on the Web

Russia has the world’s largest expanse of wetlands, making the possible impact of its nonparticipation considerable. — Encyclopedia Britannica, 24 July 2026

Temescal Gateway Park is a 141-acre expanse in Pacific Palisades that features a babbling brook, oak and sycamore canyons and trails that zigzag up the mountains, providing views of the Pacific Ocean and its coastline. — Jaclyn Cosgrove, Los Angeles Times, 23 July 2026

Civilizations could have risen to their zenith and crumbled in the time our micrometeoroid spent traversing the unfeeling expanse of interplanetary space, but its demise lasted but a fraction of a second. — Anthony Wood, Space.com, 21 July 2026

Spanning 45,000 acres, this remote expanse is packed with geological and historical treasures—fossils from the late Cretaceous, rugged badlands, hoodoo formations, and petrified wood, to name a few. — Michael Cappetta, Travel + Leisure, 21 July 2026

Word History

Etymology

New Latin expansum, from Latin, neuter of expansus, past participle of expandere

First Known Use

1667, in the meaning defined at sense 1

Rhymes for expanse

• advance
• askance
• enhance
• finance
• freelance
• mischance
• perchance
• romance
• chance
• dance
• glance
• hance

Kids Definition

expanse

noun

ex·​panse ik-ˈspan(t)s 

: a wide space, area, or stretch

the vast expanse of the ocean