The quality of being infinite; without bound or limit WordNet 3.0 & Open English WordNet

Infinity is something which is boundless, endless, or larger than any natural number. Wikipedia

An abstract concept describing something without any limit Wikipedia Disambiguation

The mathematical concept Wikipedia Disambiguation

Mathematical concept that is involved in almost all branches of mathematics, and used in many scientific and non-scientific areas. Wikipedia Disambiguation

Mathematical concept Wikidata

The property of being boundless, of being without limits or ends. Wiktionary

The property of being boundless. Wiktionary (translation)

The quality of being immeasurably large or boundless, limitlessness. Wiktionary

A number which is very large compared to some characteristic number. For example, in optics, an object which is much further away than the focal length of a lens is said to be "at infinity", as the distance of the image from the lens varies very little as the distance increases further. Wiktionary

A number which is very large compared to some characteristic number. Wiktionary (translation)

The property of being limitless, infiniteness, boundlessness. Wiktionary