The term 'A Complete and Impressive Array' can be summarized as a PANOPLY, which is a seven-letter word. A PANOPLY is defined as a complete and impressive array or collection of things, often referring to a wide variety of objects or ideas. It is derived from the Greek word 'panoplia, ' which means 'complete suit of armor.' The term is often used to describe a wide range of items, such as a collection of books, a variety of colors, or a range of opinions.