sign language
(redirected from Portuguese Sign Language)Also found in: Dictionary, Thesaurus, Encyclopedia.
sign language
A formal language of nonverbal communication based on hand shapes and gestures, facial expressions and movements.sign language
Audiology A formal language of nonverbal communication based on hand shapes, facial expressions, and movements. See Americans with Disabilities Act.sign lan·guage
(sīn lang'gwăj)A system of manual communication used by the deaf. True sign languages such as American Sign Language (ASL) have a complete representation of morphology, semantics, and syntax.