identical
adjective
1. exactly alike; incapable of being perceived as different
- rows of identical houses
- cars identical except for their license plates
Similar word(s): same, indistinguishable
2. being the exact same one; not any other:
- this is the identical room we stayed in before
Similar word(s): same, selfsame, very
3. (of twins) derived from a single egg or ovum
- identical twins are monovular
Similar word(s): monovular
4. having properties with uniform values along all axes
Similar word(s): isotropic, isotropous
5. coinciding exactly when superimposed
- identical triangles
Similar word(s): congruent, superposable
noun
1. (usually pluralized, chiefly philosophy) Something which has exactly the same properties as something else.
2. An identical twin.