Simple Definition of open letter
: a letter that is published in a newspaper but that is addressed to a well-known person or to an organization
Full Definition of open letter
: a published letter of protest or appeal usually addressed to an individual but intended for the general public
Examples of open letter in a sentence
In an open letter to the company, a citizens' group implored company executives to reconsider their decision to close the factory.
First Known Use of open letter
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