A wide and open extent, as of surface, land, or sky.(noun)
The distance or amount of expansion.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "expanse" in a sentence
"Conveying the same feel and cloaked in a white expanse is this beautiful abode with chic interiors for those craving for serenity."
"It's like an awesome machine, so powerful yet limited in expanse -- a map revealing portals, requiring off-road after entry."
"The Hebrew term expanse can be used for "something beaten out or spread out like a covering"."