means To transmit video and audio over the internet in real time, so viewers watch an event as it actually happens rather than in a recording.

from A modern compound of 'live' (broadcasting-as-it-happens, a sense radio and television gave the word in the 20th century) and 'stream' (data flowing continuously across a network, borrowed from the older image of water in motion). The pairing arrived with the internet age, once connections grew fast enough to carry moving pictures the moment they were made.