long-range intramolecular interaction

in polymers
An interaction between segments, widely separated in @[email protected] along the chain, that occasionally approach one another during molecular flexing. This type of interaction is closely related to the excluded volume of a segment, the latter quantity reflecting interactions involving segments and solvent molecules. If no confusion can occur, the word '@[email protected]' may be omitted.
Purple Book, 1st ed., p. 48 [Terms] [Book]