WordReference Random House Unabridged Dictionary of American English © 2026
Grand′ Can′yon, 
  1. Place Namesa gorge of the Colorado River in N Arizona. over 200 mi. (320 km) long;
    1 mi. (1.6 km) deep.

Collins Concise English Dictionary © HarperCollins Publishers::
Grand Canyon n
  1. a gorge of the Colorado River in N Arizona, extending from its junction with the Little Colorado River to Lake Mead; cut by vertical river erosion through the multicoloured strata of a high plateau; partly contained in the Grand Canyon National Park, covering 2610 sq km (1008 sq miles). Length: 451 km (280 miles). Width: 6 km (4 miles) to 29 km (18 miles). Greatest depth: over 1.5 km (1 mile)
'Grand Canyon' also found in these entries (note: many are not synonyms or translations):
Arizona - colorado - Colorado Plateau - feast - flyover - gee whiz - Grand Canyon National Park - Grand Canyon State - kaibab squirrel - Little Colorado - wonder

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