Is the US considered a 3rd world country?

I'm curious, could you clarify for me if the United States is generally considered a third-world country? It's a question that I've heard from time to time, and I'm interested in understanding the basis for such a classification, if any. As I understand, the term "third-world" was originally used to describe countries that were not aligned with either the capitalist West or the communist East during the Cold War era. But how does that apply to the US today, especially in light of its economic and technological advancements? I'd appreciate your insights on this matter.