bromoform (?br??m??f??m) n (Elements & Compounds) a heavy colourless liquid substance with a sweetish taste and an odour resembling that of chloroform. Formula: CHBr3. Systematic name: tribromomethane Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014