verb (used with object)
to set forth or state in detail: to expound theories.
to explain; interpret.
verb (used without object)
to make a detailed statement (often followed by on ).

1250–1300; Middle English expounen, expounden < Old French espondre < Latin expōnere to put out, set forth, explain, equivalent to ex- ex-1 + pōnere to put

expounder, noun
preexpound, verb (used with object)
unexpounded, adjective

2. See explain.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To expounding
World English Dictionary
expound (ɪkˈspaʊnd)
vb (when intr, foll by on or about)
to explain or set forth (an argument, theory, etc) in detail: to expound on one's theories; he expounded his reasoning
[C13: from Old French espondre, from Latin expōnere to set forth, from pōnere to put]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Word Origin & History

c.1300, from O.Fr. expondre, from L. exponere "put forth, explain," from ex- "forth" + ponere "to put, place" (see position); with intrusive -d. Related: Expounded; expounding.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
Example sentences
The columnist uses that relative anonymity as a springboard, expounding on
  variables left unmentioned in the initial query.
Each incident and situation is merely an opportunity for expounding some point
  of philosophy.
He is expounding on his vision of computerized education.
Expounding on why this is a problem entails a realistic understanding of the
  background of the department.
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature