"Polymer" can refer to a couple of different concepts depending on the context: 1. **In Chemistry**: A polymer is a large molecule composed of repeating structural units known as monomers, which are connected by covalent chemical bonds. Polymers can be natural (like proteins, nucleic acids, and cellulose) or synthetic (like plastics such as polyethylene and nylon). They have diverse properties and applications, ranging from flexible materials to rigid structures, depending on their chemical composition and structure.
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