Question

what is the full form of MMM ?

Answer 1

in physics MMM - Master of Medical Management.

or

Literally it just resembles the 'sound' indicating the person is listening or thinking. But during chat 'mmm' sometimes means he/she don't know what to chat or reply, so you better check with your chatting partner if your boring them and if they want to change the topic.

Answer 2

Explanation:

MMM (pronounced similar to Ermm or Umm) is an interjection commonly used in English as an "Expression of Pleasure or Contentment." In text-based messaging, MMM is often used to show pleasure at something that someone has just typed.