The term antistatic refers to a condition where static generation is inhibited during contact and separation with another material. Anti static flooring can either be static dissipative or conductive. However, not all static-dissipative or conductive flooring is antistatic. ESD floors can be conductive and still generate enough static to cause a harmful ESD event.
Note: the term antistatic has been replaced by the more accurate term: low charge generating. Low charge-generating materials prevent static from accumulating on people or objects.