non-defining

US /ˌnɑːn dɪˈfaɪnɪŋ/
UK /ˌnɑːn dɪˈfaɪnɪŋ/
"non-defining" picture
1.

nicht-definierend

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.

:
My brother, who lives in London, is a doctor.
Mein Bruder, der in London lebt, ist Arzt.
The book, which was published last year, became a bestseller.
Das Buch, das letztes Jahr veröffentlicht wurde, wurde ein Bestseller.