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
constituting a separate entity or part
recognizable; marked
clearly or sharply defined to the mind
(often followed by `from') not alike; different in nature or quality
easy to perceive; especially clearly outlined
