n. Code letters used at the beginning of radio messages intended for all receivers. [Origin unknown.] |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
CQ 2
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Tweet abbr. call to quarters |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.