I. expanse transitive verb
( -ed/-ing/-s )
Etymology: Latin expansus, past participle of expandere to spread out, expand — more at expand
obsolete : expand
II. ex·panse ikˈspan(t)s, ek-, -paa(ə)n- noun
( -s )
Etymology: New Latin expansum firmament, from Latin, neuter of expansus, past participle of expandere
: something that is spread out typically over a wide area: as
a. : firmament
moon and stars … silvering in the blue expanse — Christopher Smart
b. : an extensive and usually unbroken stretch of land or sea
great expanse of country spread around and below — D.H.Lawrence
majestic expanse of calm water — Tom Marvel