Monomer
A monomer is a small molecule that can be chemically bonded to other monomers to form a larger molecule called a polymer.
When monomers are joined together through a chemical reaction called polymerization, they form long chains or networks of repeating units that make up various types of polymers. Monomers play a crucial role in the chemistry of life, as they are used to build complex macromolecules such as carbohydrates, proteins, and nucleic acids, which are essential for the functioning of living organisms.