Translate ground zero | into French | into German | into Spanish Definition of ground zero
noun
[in singular] 1the point on the earth’s surface directly above or below an exploding nuclear bomb. (Ground Zero) the site of the former World Trade Center in New York City in the wake of the terrorist attacks of September 11, 2001. a site of devastation, disaster, or violent attack:the pictures from Indonesia’s ground zero are beyond description
2a starting point or base for some activity:if you’re starting at ground zero in terms of knowledge, go to the library
