JSL

JSL is an acronym that can refer to several distinct topics, depending on the context. The two most common referents are Japanese Sign Language and the Journal of Symbolic Logic.

Japanese Sign Language, abbreviated JSL, is the sign language used by Deaf and hard-of-hearing communities in Japan. It is a natural language with its own grammar, syntax, and lexicon, distinct from spoken Japanese. Communication in JSL uses manual signs produced with the hands, facial expressions, and body movements. There are regional varieties within Japan, and JSL is used in education, media, and daily life. It is not mutually intelligible with many other sign languages, such as American Sign Language, reflecting its separate linguistic lineage. Researchers study JSL's structure, including its sign phonology, morphology, and syntax, as well as social and educational aspects of its use and recognition.

Journal of Symbolic Logic, abbreviated JSL, is a peer-reviewed academic journal in the field of mathematical logic and related areas. It publishes research articles, surveys, and notes that contribute to the foundations and development of logic. Subjects commonly featured include model theory, proof theory, set theory, computability theory, type theory, and the philosophy of logic. The journal serves as a primary publication venue for work in symbolic logic and is associated with the broader community of logicians and philosophers who study formal systems and their implications.

Other uses of JSL exist in various organizational, technical, or regional contexts. When encountering the acronym, the intended meaning is usually clarified by surrounding subject matter or explicit definition.