infinity
infinity — noun
1. The condition of continuing without any boundary or stopping point, especially w
The condition of continuing without any boundary or stopping point, especially when thinking about the universe, time, or a quantity that never ends.
Joon stared at the stars, trying to understand the idea of infinity.
the idea of infinity — abstract concept
The teacher explained that infinity has no beginning and no end.
Otis felt a strange calm when he thought about the infinity of time.
Naoko's respect for the natural world came from imagining the infinity of the universe.
- endlessness
more concrete and everyday; less abstract than infinity
- boundlessness
more formal or literary; emphasizes the lack of limits
- limitlessness
similar to boundlessness, slightly less formal
- finity
rare; the state of having limits
- limitation
different concept; refers to a specific restriction rather than the opposite of boundlessness
文法句型
the infinity of + noun (space, time, universe)
to / into infinity
用法筆記
Often used with 'of' to connect to a specific boundless thing, as in 'the infinity of space' or 'the infinity of time.' Common in philosophical, scientific, and poetic contexts.
常見錯誤
2. A very distant location that appears unreachable, commonly describing something
A very distant location that appears unreachable, commonly describing something moving away until it can no longer be seen.
Gabriel watched the train move toward the mountains and disappear into infinity.
disappear into infinity — receding beyond sight
The dirt road stretched to infinity, with no houses or cars in sight.
From the hilltop, Mauricio saw the desert sand fade into infinity.
Cyrus pointed at the ocean and said the water seemed to reach into infinity.
- the horizon
more specific; the visible line where earth meets sky
- the distance
less dramatic; simply a faraway point
- the beyond
more poetic or literary; suggests something mysterious
文法句型
into infinity
to infinity
disappear / fade / recede into infinity
用法筆記
Almost always appears in the phrase 'into infinity' following verbs of movement or disappearance such as 'stretch,' 'fade,' 'disappear,' or 'recede.'
常見錯誤
3. In mathematics, a quantity that is greater than any number that can be named, us
In mathematics, a quantity that is greater than any number that can be named, used in calculations about limits, series, and geometry, and shown by the symbol ∞.
Faisal learned that in calculus the symbol ∞ stands for infinity.
symbol ∞ stands for infinity
The number line stretches in both directions without ever reaching infinity.
Stefan had to find the limit of the function as x approached infinity.
Christopher drew a line on the graph showing values moving toward infinity.
- the infinite
noun form used in formal mathematics and philosophy
- limitlessness
less technical; describes the quality rather than the mathematical concept
- zero
the opposite end of the number line in some contexts
文法句型
approach infinity
toward infinity
the symbol for infinity
用法筆記
In mathematics, infinity is not a number you can add, subtract, or multiply — it is a concept describing something without an upper bound. Frequently used in calculus when discussing limits.
常見錯誤
4. An amount or number that is so big it is hard to count or even picture.
An amount or number that is so big it is hard to count or even picture.
Quan had an infinity of apps on his phone and could not pick one.
an infinity of [apps/choices/things] — huge quantity
Adisa discovered there were an infinity of reasons to love his new city.
The night sky contains an infinity of stars waiting to be discovered by scientists.
Hamza faced an infinity of questions from the curious students at the science fair.
- countless
adjective meaning too many to count; more common in everyday writing
- myriad
more formal or literary; suggests great variety as well as number
- a huge number
less emphatic; simply means very many
文法句型
an infinity of + plural noun
用法筆記
Used hyperbolically in everyday speech to mean 'a very large number' rather than literally endless. The phrase 'an infinity of' emphasizes that the number feels overwhelming or uncountable.