Lowest Common Multiple (L. C. M. : The smallest number which is a multiple of each of several numbers. Thus 60 is the L. C. M. of 30, 12 and 10. Low expansion foam. See: Foam, Low Expansion
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}