Relating to or expressed through pictures, paintings, photographs, or visual images rather than words.
From Latin 'pictura' (painting) + '-al' (relating to). The adjective form emerged in the 1600s as visual arts became more important in communication.
Children's books became 'pictorial' because researchers discovered that pictures actually help learning more than text alone—the brain processes images 60,000 times faster than words, which is why a picture is worth a thousand words isn't just poetic, it's literally how human brains work.
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