"Turn to dust" is a metaphorical expression that is derived from the process of decomposition and signifies the complete disintegration or destruction of something. It refers to when an object or entity has become completely useless or obsolete, losing all value or significance.
In a literal sense, dust consists of tiny, fine particles that are formed from the disintegration or breaking down of larger solid materials such as rocks, soil, or organic matter. Similarly, when something turns to dust figuratively, it implies that it has disintegrated or crumbled into insignificance, becoming utterly worthless or forgotten.
The phrase can be applied to various contexts. For instance, it is commonly used to describe the disappearance or decay of great empires or civilizations throughout history. When a once-powerful civilization turns to dust, it implies that it has fallen, often due to internal conflicts, external invasions, or social, economic, and political decay.
Metaphorically, the expression can also be used to describe the fate of a person, idea, or invention that was once important or influential but has lost all relevance over time. It suggests a transformation from a state of prominence or success to one of total irrelevance or obscurity.
Overall, "turn to dust" symbolizes the complete and irreversible annihilation or decline of something, emphasizing its utter insignificance, dissolution, or obsolescence.
