What does "stupendous" mean?

Stupendous: Astonishing; wonderful; amazing; especially, astonishing in magnitude or elevation; as, a stupendous pile. "A stupendous sum." Macaulay. All are but parts of one stupendous whole. Pope. -- Stu*pen"dous*ly, adv. -- Stu*pen"dous*ness, n.

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