What is que onda?

"Qué onda" is a colloquial phrase commonly used in Spanish-speaking countries, particularly in Mexico, to greet someone or ask how they are doing. It can be roughly translated to "what's up" or "how's it going" in English. The word "onda" means "wave," but in this context, it conveys a sense of vibe or mood. The phrase is informal and typically used among friends or in casual settings.