Fujita scale (fu??d?i?t?) n (Physical Geography) a scale for expressing the intensity of a tornado, ranging from F0 (light damage) to F5 (incredible damage)[C20: named after Tetsuya Fujita, Japanese meteorologist]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014