Cross-linkage refers to the interconnection of biological macromolecules through chemical bonds. The term cross-linkage is used across various fields, including materials science, biology, and chemistry. The synonyms for cross-linkage include cross-linking, crosslinking, intermolecular crosslinking, chemical bridging, chemical crosslinking, and linking. However, the term cross-linkage is often preferred over the other synonyms as it is more commonly used. Cross-linkage plays a crucial role in the properties of materials and the functioning of biological systems. Understanding the various synonyms for cross-linkage can help clarify technical jargon and facilitate communication across different scientific disciplines.