AMA noun 1phrase 1prepositional phrase 1forms 1 noun1 •(Internet) Initialism of ask me anything.While Obama’s AMA ended up being a bit bland, the experiences and knowledge shared by the vacuum repair man made it one of the most popular and memorable AMAs ever hosted. — 2016 phrase1 •(Internet) Initialism of ask me anything: usually attached to the end of a prompt in an “ask me anything” interview session. prepositional phrase1 •Initialism of against medical advice. formsAMAs