Have you met (someone?)
a question asked when introducing someone to someone else. (The question need not be answered. The someone is usually a person's name.) Tom: Hello, Mary. Have you met Fred? Mary: Hello, Fred. Glad to meet you. Fred: Glad to meet you, Mary. Tom: Hey, Mary! Good to see you. Have you met Fred? Mary: No, I don't believe I have. Hello, Fred. Glad to meet you. Fred: Hello, Mary.