Ex*pa"ti*ate, v. t. To expand; to
spread; to extend; to diffuse; to broaden.
Afford art an ample field in which to expatiate
itself.
Dryden.Ex*pa"ti*ate (?), v. i. [imp. &
p. p. Expatiated (?); p. pr. & vb.
n. Expariating (?).] [L. expatiatus,
exspatiatus, p. p. of expatiari, exspatiari, to
expatiate; ex out + spatiari to walk about spread out,
fr. spatium space. See Space.] 1.
To range at large, or without restraint.
Bids his free soul expatiate in the
skies.
Pope.
2. To enlarge in discourse or writing; to be
copious in argument or discussion; to descant.
He expatiated on the inconveniences of
trade.
Addison.