What does RX D mean?

Could you clarify what RX D stands for in the context you're referring to? It's not a commonly used term in the cryptocurrency or finance industry. If it's related to a specific platform, service, or product, perhaps providing more context would help me give you a more accurate answer. Alternatively, if RX D refers to something outside of these fields, perhaps it's a technical abbreviation or code used in another industry or context? Let me know if you have any additional information that could help me understand the question better.