Radical 1 : (1) (Chem). A fragment of a molecule which can maintain a separate existence for a short time, and can therefore take part as an entity in a chemical reaction. (2) (Math). A mathematical symbol indicating a root
H. J. Porter (Chairman - Technical Committee), Dictionary of Fire Technology, The Institution of Fire Engineers, The Victory Press (Leicester) Ltd. 1979 UK. (Fr Tech - Brit) {81}