[{"Bold_text": "noun", "List Items": ["a determining or factor.", "Mathematics.an algebraic expression of the sum of products of elements, each with an appropriate algebraic sign, usually written in a square array and used in the solution of systems of linear equations.", "Also calledantigen?ic deter?minant,.Immunology.any site on an molecule at which an can bind, the chemical structure of the site determining the specific combining antibody.", "Genetics Archaic.a gene."]}]