Intramolecular is a term used to describe the interactions between atoms within a single molecule. It is the opposite of intermolecular, which describes the interactions between molecules. Intramolecular forces are typically weaker than intermolecular forces, but they are still important in determining the structure and properties of a molecule. The term INTRAMOLECULAR can be broken down into two parts: INNER (5 letters) and MOLECULAR (9 letters).