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Definition of "expansion" []

  • The act or process of expanding: the new nation's expansion westward. (noun)
  • The state of being expanded. (noun)
  • An expanded part: an expansion of a river. (noun)
  • A product of expanding: a book that is an expansion of the author's Ph.D. thesis. (noun)
  • The extent or amount by which something has expanded. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "expansion" in a sentence
  • "The label expansion should help boost Cialis sales, which came in at $1.7 billion in 2010."
  • "We believe that the label expansion efforts are very encouraging as currently Soliris revenues are being generated entirely from the paroxysmal nocturnal hemoglobinuria indication - a rare genetic blood disorder indication."
  • "Many analysts saw the label expansion as a foregone conclusion, since physicians have used Thalomid "off label" as a treatment for multiple myeloma, a blood cancer."