Web-Related Terms Beginning with Z
z=0 Plane
The z=0 plane is the point on the Cartesian coordinate system where the coordinate z equals zero (0).
Zero or More (RegExp)
Regular expression's zero or more operator (*) specifies that you wish to find zero or more occurrences of its preceding item.
Zero or One (RegExp)
Regular expression's zero or one operator (?) specifies that you wish to find zero or one occurrence of its preceding item.