- (transitive) To lay open the meaning of; to explain or discuss at length; to clear of obscurity; to interpret.
1891, Oscar Wilde, The Picture of Dorian Gray:
- Some day, when you are tired of London, come down to Treadley, and expound to me your philosophy of pleasure over some admirable Burgundy I am fortunate enough to possess.
- (intransitive) To make a statement, especially at length.
- He expounded often on the dangers of the imperial presidency.
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Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.