The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Of, relating to, or produced for consumption in large numbers, especially when sold in supermarkets, in drugstores, and at newstands: a mass-market paperback.transitive verb mass-mar·ket·ed, mass-mar·ket·ing, mass-mar·kets
To produce for consumption in large numbers.