A secondary title or text at the bottom of a screen showing what characters are saying, especially for translation or hearing-impaired viewers.
From 'sub-' (under, below) + 'title.' Latin 'sub' means beneath, combined with 'title' from Latin 'titulus' (inscription, heading).
Subtitles actually improve learning for everyone—even native speakers understand more and remember it better when they read captions. Studies show that people who watch with subtitles have larger vocabularies and comprehend more complex content.
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