| Subject | English | Spanish |
| comp., MS | instant messaging | mensajería instantánea (A method of real-time communication over the Internet in which a sender types a message to one or more recipients and the recipient immediately receives the message in a chat area) |
| comp., MS | instant messaging | de mensajería instantánea (Pertaining to a message sent in real time through a network to a private chat area) |
| inet. | Instant Messaging | Mensajerca Instantánea |
| social.sc., commun. | instant messaging | envío de mensajes instantáneamente |
| comp., MS | instant messaging session | sesión de mensajería instantánea (A real-time communication over the Internet in which a sender types a message to one or more recipients and the recipient(s) immediately receives the message in a pop-up window) |