infinity

noun5

1. •
   Endlessness, unlimitedness, absence of a beginning, end or limits to size.

   • The desert stretched out toward the horizon as if into infinity.
2. •
   The symbol ∞.
3. •
   A number that has an infinite numerical value that cannot be counted.
4. •
   An idealised point which is said to be approached by sequences of values whose magnitudes increase without bound.
5. •
   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.