'Infinitude' definitions:

Definition of 'infinitude'

noun

An infinite quantity

noun

The quality of being infinite; without bound or limit [syn: infiniteness, infinitude, unboundedness, boundlessness, limitlessness] [ant: boundedness, finiteness, finitude]

From: GCIDE

Infinitude \In*fin"i*tude\, n.
1. The quality or state of being infinite, or without limits; infiniteness. [1913 Webster]
2. Infinite extent; unlimited space; immensity; infinity. "I am who fill infinitude." --Milton. [1913 Webster]
As pleasing to the fancy, as speculations of eternity or infinitude are to the understanding. --Addison. [1913 Webster]
3. Boundless number; countless multitude. "An infinitude of distinctions." --Addison. [1913 Webster]