A public criticism or challenge; a formal request for help or emergency response; in media, highlighted text that draws attention to important information.
From the phrasal verb 'call out' (to publicly challenge or summon). Modern usage consolidated into a single noun in the 20th century.
The digital age transformed 'callout' from a simple summoning word into a key term of social accountability—the ability to instantly broadcast criticism to millions is entirely new, but the word just reuses an old phrase.
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