Added a brief explanation or title to a picture, video, or text.
From Latin 'capere' (to take, seize) evolving into 'caput' (head), then 'caption' (a heading that captures the main idea). Added '-ed' for past tense in modern English.
Captions on social media actually change how your brain processes images—studies show you remember captioned images longer because your brain engages both visual and language centers simultaneously.
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