Definition: The word "amorphous" in Greek mythology means "unstructured, chaotic." It describes a being that lacks clear form or structure. Definition: In Greek mythology, "amorphous," also known as "unstructured," refers to an object that is not defined by its internal or external characteristics. It could be anything from a sphere of light to a small piece of cheese, and it doesn't have any fixed shape or size. This concept is often used in stories to explore the idea of chaos and randomness.