The crossword solution for the term 'SEEPED IN' is OSMOSED, which is a seven-letter word. Osmosis is a process in which molecules of a solvent pass through a semipermeable membrane from a less concentrated solution into a more concentrated one, equalizing the concentrations on each side. This process can be seen in nature, such as when water passes through a plant's cell walls. In this context, the term 'SEEPED IN' implies that something has been absorbed or taken in by osmosis.