IMMENSITY
enormousness, grandness, greatness, immenseness, immensity, sizeableness, vastness, wideness
(noun) unusual largeness in size or extent or number
Source: WordNet® 3.1
Etymology
Noun
immensity (countable and uncountable, plural immensities)
The state or characteristic of being immense.
An immense object.
Source: Wiktionary
Im*men"si*ty, n.; pl. Immensities. Etym: [L. immensitas: cf. F.
immensité.]
Definition: The state or quality of being immense; inlimited or
immeasurable extension; infinity; vastness in extent or bulk;
greatness.
Lost in the wilds of vast immensity. Blackmore.
The immensity of the material system. I. Taylor.
Source: Webster’s Unabridged Dictionary 1913 Edition