1. Mountain State of the W U.S.: admitted, 1876; 103,718 sq mi (268,627 sq km); pop. 4,301,000; cap. Denverabbrev. CO or Colo
2. river in SW U.S., flowing from the Rocky Mts. of N Colo. southwest through Utah & along the Ariz.-Nev. & Ariz.-Calif. borders into the Gulf of California: 1,450 mi (2,333 km)
3. river in Tex., flowing from the NW part southeast into the Gulf of Mexico: 840 mi
Webster’s New World College Dictionary, Fourth Edition, compiled by the
editors of Webster’s New World Dictionaries. Copyright © 2010 by Houghton
Mifflin Harcourt. Published by Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'Colorado'< Sp name of the river, Río Colorado, lit., reddish-brown river