(1) (
Infra
Red-
C) See
infrared wavelengths.
(2) (
Internet
Relay
Chat) Computer conferencing on the Internet. There are hundreds of IRC channels on numerous subjects that are hosted on IRC servers around the world. After joining a channel, your messages are broadcast to everyone listening to that channel. IRC client programs, such as mIRC, provide a graphical interface for all functions, including logging into popular servers and obtaining a list of their active channels. See
mIRC,
netsplit,
SOP and
AOP.