English

Adjective

countable ‎(not comparable)

1. Capable of being counted; having a quantity.
2. (mathematics, of a set) Countably infinite or finite; having a bijection with a subset of the natural numbers.
3. (mathematics, of a set) Countably infinite; having a bijection with the natural numbers.
4. (grammar, of a noun) Freely usable with the indefinite article and with numbers, and therefore having a plural form.

Usage notes

The mathematics sense by which finite sets are countable is more common than the sense by which finite sets are not countable.

Synonyms

• (having a bijection with a subset of the natural numbers): denumerable

Antonyms

• uncountable

Hyponyms

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

Hypernyms

• (countably infinite): infinite

Derived terms

• countable set
• countable additivity

Related terms

• countability

Translations

See also

• mass noun
• plurale tantum