GNU Collaborative International Dictionary of English

Found 2 definitions

1.       
   Expatiate , 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.]
   To range at large, or without restraint.
   1913 Webster
   Bids his free soul expatiate in the skies.
   Pope.
   
   1913 Webster
   To enlarge in discourse or writing; to be copious in argument or discussion; to descant.
   1913 Webster
   He expatiated on the inconveniences of trade.
   Addison.
   
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2.       
   Expatiate, v. t. To expand; to spread; to extend; to diffuse; to broaden.
   1913 Webster
   Afford art an ample field in which to expatiate itself.
   Dryden.
   
   1913 Webster