Webster's Revised Unabridged Dictionary · 1913

Immensity

Immensity , noun

[Latin immensitas: compare French immensité.]

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