| Subject | Dutch | English |
| commun., IT | alarm relay interface card | ARI card |
| el. | digitaal radio-relay-systeem | digital radio-relay system |
| fin., industr. | Europees netwerk van Relay Centra voor innovatie | European Network of Innovation Relay Centres |
| commun., IT | frame relay assembler | frame relay assembler/disassembler |
| commun., IT, engl. | Internet Relay Chat | Internet Relay Chat |
| nat.sc. | netwerk van Relay Centra | network of relay stations |
| nat.sc. | netwerk van Relay Centra | network of relay centres |
| nat.sc., energ.ind. | Relay Centrum voor innovatie | Innovation Relay Centre |
| IT | relay unit | relay |
| IT | relay unit | N-relay |
| comp., MS | Teredo-relay | Teredo relay (An IPv6/IPv4 router that can forward packets between Teredo clients on the IPv4 Internet (using a Teredo tunneling interface) and IPv6-only hosts) |