INFINITY
eternity, infinity
(noun) time without end
Source: WordNet® 3.1
Etymology
Noun
infinity (countable and uncountable, plural infinities)
(uncountable) Endlessness, unlimitedness, absence of a beginning, end or limits to size.
(countable, mathematics) A number that has an infinite numerical value that cannot be counted.
(countable, topology, analysis) An idealised point which is said to be approached by sequences of values whose magnitudes increase without bound.
(uncountable) 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.
(countable, uncountable) The symbol ∞.
Usage notes
In mathematics there are several different infinities; see transfinite.
Synonyms
• (absence of a beginning, end or limits to size): See also infinity
Antonyms
• finity
Source: Wiktionary
In*fin"i*ty, n.; pl. Infinities. Etym: [L. infinitas; pref. in- not +
finis boundary, limit, end: cf. F. infinité. See Finite.]
1. Unlimited extent of time, space, or quantity; eternity;
boundlessness; immensity. Sir T. More.
There can not be more infinities than one; for one of them would
limit the other. Sir W. Raleigh.
2. Unlimited capacity, energy, excellence, or knowledge; as, the
infinity of God and his perfections. Hooker.
3. Endless or indefinite number; great multitude; as an infinity of
beauties. Broome.
4. (Math.)
Definition: A quantity greater than any assignable quantity of the same
kind.
Note: Mathematically considered, infinity is always a limit of a
variable quantity, resulting from a particular supposition made upon
the varying element which enters it. Davies & Peck (Math. Dict. ).
5. (Geom.)
Definition: That part of a line, or of a plane, or of space, which is
infinitely distant. In modern geometry, parallel lines or planes are
sometimes treated as lines or planes meeting at infinity. Circle at
infinity, an imaginary circle at infinity, through which, in geometry
of three dimensions, every sphere is imagined to pass.
– Circular points at infinity. See under Circular.
Source: Webster’s Unabridged Dictionary 1913 Edition