Meaning of the word "open letter" in English

What does "open letter" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

open letter

US /ˌoʊ.pən ˈlet̬.ɚ/
UK /ˌoʊ.pən ˈlet̬.ɚ/
"open letter" picture

Noun

1.

a letter of protest or appeal addressed to a particular person or group but intended for general publication

Example:
The activists published an open letter to the government.
Her open letter about climate change went viral.
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