Characteristic of a Logarithm : The integral part of a logarithm is its characteristic, the decimal part its mantissa, e. g. Log 28 = 1. 4472. Characteristic is 1, mantissa is . 4472
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}