Noun

(label) Endlessness, unlimitedness, absence of end or limit.

A number that has an infinite numerical value that cannot be counted.

* {{quote-magazine, date=2012-01

, author=Michael Riordan , title=Tackling Infinity , volume=100, issue=1, page=86 , magazine= citation , passage=Some of the most beautiful and thus appealing physical theories, including quantum electrodynamics and quantum gravity, have been dogged for decades by infinities' that erupt when theorists try to prod their calculations into new domains. Getting rid of these nagging ' infinities has probably occupied far more effort than was spent in originating the theories.}}

An idealised point which is said to be approached by sequences of values whose magnitudes increase without bound.

(label) 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.

(label) The symbol .

Noun

(wikipedia eon) (en noun)

(US) Eternity.

A period of 1,000,000,000 years.

*{{quote-magazine, date=2012-01

, author=Robert L. Dorit , title=Rereading Darwin , volume=100, issue=1, page=23 , magazine= citation , passage=We live our lives in three dimensions for our threescore and ten allotted years. Yet every branch of contemporary science, from statistics to cosmology, alludes to processes that operate on scales outside of human experience: the millisecond and the nanometer, the eon and the light-year.}}

(geology) The longest time period used in geology.

(US, informal, hyperbole) A long period of time.

It's been eons since we last saw each other.

A spirit being emanating from the Godhead.