/ Dictionary / Index E expansionary: Meaning and Definition of Find definitions for: ex•pan•sion•ar•y Pronunciation: (ik-span'shu-ner"ē), [key] — adj. tending toward expansion: an expansionary economy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. expansion expansion attic Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language