nul·li·fy /ˈnʌlɪfaɪ/ verb (nullified, nullifying) [transitiveT] 1 lawSCL to officially state that something has no legal force 宣布…在法律上无效 The election results were nullified because of voter fraud. 由于选票造假,选举结果被宣布无效。
2 formalVALUE#EFFECTIVE# to make something lose its effect or value 使无效;使无价值 SYN cancel out Recent inflation could nullify the economic growth of the last several years. 最近的通货膨胀可能会抵消过去数年的经济增长。
—nullification /ˌnʌlɪfɪˈkeɪʃən/ noun [uncountableU]