Pronunciation: (ik-spā'shē-āt"), [key]
v.i., -at•ed, -at•ing.
1. to enlarge in discourse or writing; be copious in description or discussion: to expatiate upon a theme.
2. Archaic.to move or wander about intellectually, imaginatively, etc., without restraint.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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