The word "septangle" is spelled with seven letters and can be broken down into two parts: "sept" and "angle." The first part, "sept," comes from the Latin word "septem," which means "seven." The second part, "angle," refers to a geometric shape with four corners and four sides. When pronounced, "septangle" sounds like /sep-tang-guhl/, with the stress on the second syllable. This unique word is often used to describe a seven-sided polygon, also known as a heptagon.