- The definition of colossal is something massive in size.
Machu Picchu is an example of a colossal ancient ruin.
Machu Picchu in Peru is a colossal ruin.
colossal definition by Webster's New World
- like a colossus in size; huge; gigantic
- astonishingly great; extraordinary: a colossal fool
- colossally adverb
colossal definition by American Heritage Dictionary
Origin: French, from Latin colossus, colossus; see Colossus .
- co·losˈsal·ly adverb