identical identical /aɪˈdɛntɪkəl/

adjective

1. () Exactly alike; incapable of being perceived as different  ( indistinguishable , identical )
   exactly alike; incapable of being perceived as different
    Rows of identical houses
   rows of identical houses
    Cars identical except for their license plates
   cars identical except for their license plates
    They wore indistinguishable hats
   they wore indistinguishable hats
   
2. () Being the exact same one; not any other:  ( selfsame , identical , very )
   being the exact same one; not any other:
    This is the identical room we stayed in before
   this is the identical room we stayed in before
    The themes of his stories are one and the same
   the themes of his stories are one and the same
    Saw the selfsame quotation in two newspapers
   saw the selfsame quotation in two newspapers
    On this very spot
   on this very spot
    The very thing he said yesterday
   the very thing he said yesterday
    The very man I want to see
   the very man I want to see
   
3. (of twins) derived from a single egg or ovum  ( identical , monovular )
   (of twins) derived from a single egg or ovum
    Identical twins are monovular
   identical twins are monovular
   
4. Coinciding exactly when superimposed  ( identical , superposable )
   coinciding exactly when superimposed
    Identical triangles
   identical triangles
   
5. (physics) having properties with uniform values along all axes  ( identical )
   (physics) having properties with uniform values along all axes