Meaning of the word non-defining in English

What does non-defining mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

non-defining

US /ˌnɑːn dɪˈfaɪnɪŋ/
UK /ˌnɑːn dɪˈfaɪnɪŋ/
"non-defining" picture

Adjective

1.

a non-defining relative clause gives extra information about the noun or pronoun it refers to, but is not essential to the meaning of the sentence. It is usually separated by commas.

Example:
My brother, who lives in London, is a doctor.
The book, which was published last year, became a bestseller.
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