open letter
noun
Definition of open letter
: a published letter of protest or appeal usually addressed to an individual but intended for the general public
From the M-W Editors
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.
1898
First Known Use of open letter
1898
OPEN LETTER Defined for English Language Learners
open letter
noun
Definition of open letter for English Language Learners
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: a letter that is published in a newspaper but that is addressed to a well-known person or to an organization
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