Updated: 07/20/2017 by Computer Hope

Parent over shoulder of girl on computerShorthand for Code 9, CD9 is often used in chat rooms as a code to alert other users that a parent or another adult such as a teacher is in the room.

A child may use the "CD9" term in chat to alert others in a chat to not say things that could get the child in trouble by the parent or guardian who is watching them.

Chat terms, FOS, MOS, P911, PAW, PIR, POS, PRW, TOS