Macromolecule

noun

1. A very large molecule, such as a polymer or protein, consisting of many smaller structural units linked together.
2. A molecule consisting of several molecules.
3. A very large molecule, especially a polymer having from hundreds to many thousands of atoms, such as DNA, RNA, protein, polysaccharide, polyethylene, polycarbonate, etc.
4. A very large molecule, especially used in reference to large biological polymers (e.g. nucleic acids and proteins).
5. any very large complex molecule; found only in plants and animals