Final answer:
The term 'polymer' signifies 'many parts' and refers to large molecules made from many smaller units called monomers.
Step-by-step explanation:
The word polymer means many parts. A polymer is a large molecule that is formed by joining together many smaller molecules, called monomers. This joining together of monomers is known as polymerization, which produces varied structures leading to a wide array of properties and uses for polymers. These macromolecules can be either natural, like starch and proteins, or synthetic, such as polyethylene and polystyrene. The functional groups within a polymer impact its properties significantly.