| Subject | German | English |
| gen. | Internet chat | Internet relay chat IRC |
| abbr. | Internet relay chat | IRC |
| commun., IT, engl. | Internet Relay Chat | Internet Relay Chat |
| gen. | Internet Relay Chat | Internet relay chat IRC |
| comp. | Internet-Relay-Chat | IRC (à mechanism that allows for a number of Internet users to connect to the same network node and chat in real time) |
| comp. | Internet-Relay-Chat | Internet Relay Chat |