invariant noun

English

Examples (invariant nouns)
The series run simultaneously. The series runs for three weeks.

Noun

invariant noun (plural invariant nouns)

1. (grammar) A noun in which number is not marked; that is, a noun which does not change form in the plural, such as, in English, fish and series.

See also

• Category:English invariant nouns
• mass noun
• singulare tantum
• plurale tantum