- a vast metropolitan area that encompasses several cities and their suburbs: We're moving to the Dallas-Ft. Worth Metroplex.
Origin of Metroplex
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for metroplex
The D.C. metroplex has six of the richest counties in America.
In the past year, the D.C. metroplex has added 33,000 jobs, or 1.1 percent of the total.