The term 'TIDE REFLUX' is a combination of two words, 'TIDE' and 'REFLUX'. TIDE refers to the regular rise and fall of the sea level due to the gravitational pull of the moon and sun. REFLUX is the return flow of a liquid or gas back to its source. Together, the term 'TIDE REFLUX' describes the phenomenon of the sea level rising and falling in a cyclical pattern. The crossword solution for this term is 'EBB', which is a verb meaning to recede or flow back. Therefore, the term 'TIDE REFLUX' can be summarized as the cyclical rise and fall of the sea level, with the water receding back to its source.