Relating to or involving gestures, especially hand and body movements used for communication or expression.
From gesture (from Latin gestus) plus the suffix -al (relating to). The term entered English in the 18th-19th centuries as gesture became more studied in art and performance.
Deaf sign languages are fully gestural languages—they prove that human language doesn't need sound to work perfectly. In fact, some linguists argue gestural languages might be older than spoken language since all humans gesture, but not all humans could speak without recent evolutionary development.
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