The term 'Immeasurably Extended' can be summarized by the crossword solution 'COSMIC, ' which is a six-letter word. COSMIC refers to the universe and all of its contents, including stars, planets, galaxies, and other celestial bodies. It is used to describe anything that is vast and beyond human comprehension. The term 'Immeasurably Extended' is often used to refer to the size and scope of the universe, which is truly immeasurable.