A collection of bits or characters that represent a fragment or segment (i.e., portion) of a message. A message unit can take the form of a block, cell, frame, or packet. See also block, cell, frame, message, and packet.
"message unit." YourDictionary, n.d. Web. 17 May 2018. <http://www.yourdictionary.com/message-unit>.
message unit. (n.d.). Retrieved May 17th, 2018, from http://www.yourdictionary.com/message-unit