multichain (?m?lt??t?e?n) adj (Chemistry) comprising or involving several chains, esp (in chemistry) of a linear polymerCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014