isomorphism

noun

Etymology: From iso- + -morphism.

1. Similarity of form

   “The postulated isomorphism between words and things constitutes the characterizing feature of all philosophically based universal languages.”

2. Similarity of form
3. Similarity of form

   “The isomorphism of compounds does not prove the isomorphism of their respective constituents.”

4. Similarity of form
5. A one-to-one correspondence
6. A one-to-one correspondence
7. A one-to-one correspondence