English Dictionary

infinity

IPA（発音記号）

/ɪnˈfɪnɪti/

名詞

不可算名詞 可算名詞

(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.

日本語の意味

無限性（始まりや終わり、または大きさに制限がない状態） / 無限大（数学において、数値で表せないほど巨大な値または極限的な大きさを示す概念）

Staring into the night sky, she felt as if she were gazing into infinity.

夜空を見つめると、まるで無限を見つめているかのように感じた。

意味（1）

(uncountable) endlessness, unlimitedness, absence of a beginning, end or limits to size.

意味（2）

(countable, mathematics) A number that has an infinite numerical value that cannot be counted.

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.

意味（3）

(countable, topology, mathematical analysis) An idealised point which is said to be approached by sequences of values whose magnitudes increase without bound.

意味（4）

(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.

意味（5）

(countable, uncountable) The symbol ∞.

infinities （ plural ）