Between molecules; among the smallest particles of a substance: as. “intermolecular action,”

adjective. from one molecule to another; between molecules

adjective. existing or acting between molecules

""intermolecular" (and how do you have "intermolecular forces" if you have a gas which isn't molecules, but I digress: -)."

Van der Waals force  intramolecular  

intermolecularity  

molecular  secular  

combinatorial  dipolar  dipole­dipole  drag-and-drop  enzymic