Definitions
There are 3 meanings of the phrase
Ground Zero.
Ground Zero - as a noun
The target of a projectile (as a bomb or missile)
The site of the world trade center before it was destroyed
Synonyms (Exact Relations)
world trade center siteThe point of detonation (or above or below) of a nuclear weapon
Example Sentences
"After the terrorist attacks on September 11th, 2001, the World Trade Center became known as ground zero."
"The city decided to build a memorial at ground zero to honor the victims of the tragedy."
"Scientists studied the effects of radiation at ground zero."
"The bomb completely destroyed everything within a mile of ground zero."
"Many survivors suffered from severe health problems after being exposed to radiation at ground zero."