countableとは 意味・読み方・使い方

発音

• IPA^(key): /ˈkaʊntəbəl/
  • (米国発音) IPA^(key): [ˈkʰaʊn(ɾ)əbɫ̩]

形容詞

countable (not comparable)

1. Capable of being counted; having a quantity.

   Antonym: uncountable

2. (mathematics, of a set) finite or countably infinite; having a one-to-one correspondence (bijection) with a subset of the natural numbers.

   Antonym: uncountable

3. (mathematics, of a set) Countably infinite; having a bijection with the natural numbers.

   Synonym: denumerable

4. (grammar, of a noun) Freely usable with the indefinite article and with numbers, and therefore having a plural form.
   • 2014, James Lambert, “Diachronic stability in Indian English lexis”, in World Englishes, page 112:

     In these extracts the word abuse is used in the sense of ‘an individual piece of invective’ or ‘an abusive comment’ and is clearly a countable noun.

   Antonym: uncountable

使用する際の注意点

The mathematics sense by which finite sets are countable is more common than the sense by which finite sets are not countable. To avoid ambiguity, the terms at most countable or countably infinite may be used.

反意語

• non-denumerable
• uncountable

上位語

• (countably infinite): infinite

下位語

• (having a bijection with a subset of the natural numbers): finite, countably infinite

派生語

関連する語

• countability

名詞

countable (複数形 countables)

1. (grammar) A countable noun.

参考