What term describes many monomers linked together?

The term that describes many monomers linked together is a polymer. Polymers are large molecules composed of repeating structural units, known as monomers, which are covalently bonded together. This process of linking monomers to form polymers is fundamental in the field of biochemistry and materials science, as it contributes to the formation of substances such as proteins, nucleic acids, and synthetic materials.

While a polypeptide refers specifically to a polymer made of amino acid monomers, and a macromolecule generally indicates a large molecule that can include both polymers and other large molecular structures, the most precise term for a chain made up of many linked monomers is indeed polymer. Monomer itself refers to the individual building blocks that can be combined to create polymers, so it does not describe the linked structure.