Etymology
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expanse (n.)

"spatial extension; an uninterrupted stretch or area, especially one of considerable extent," 1660s, from Latin expansum, noun use of neuter of expansus, past participle of expandere "to spread out, unfold, expand," from ex "out" (see ex-) + pandere "to spread, stretch" (from nasalized form of PIE root *pete- "to spread").

updated on April 30, 2020

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