being the exact same one; not any other:
exactly alike; incapable of being perceived as different
coinciding exactly when superimposed
(of twins) derived from a single egg or ovum
having properties with uniform values along all axes
being two identical
a copy that corresponds to an original exactly
duplicate or match
make or do or perform again
increase twofold
something additional of the same kind
identically copied from an original
make a duplicate or duplicates of