Micro Signification de l'émoji
A microphone, used to amplify a person’s voice when speaking or singing.
Previously shown with music notes on most platforms, implying it to be used for a singer / singing. Today only Twitter's design retains these notes.
Micro a été approuvé dans le cadre de Unicode 6.0 en 2010 et ajouté à Emoji 1.0 en 2015.