| Subject | English | Slovene |
| econ. | apparatus based on the use of rays | sevalnik |
| comp., MS | Blu-ray Disc | disk Blu-ray (A high definition optical disc format which uses a smaller focus blue-violet 405 nm laser allowing higher precision and storage density. A competitor to HD DVD) |
| tech., el. | cathode ray oscillograph | katodni osciloskop |
| earth.sc., life.sc. | gamma rays | žarki gama |
| earth.sc., life.sc. | gamma-rays | žarki gama |
| earth.sc., life.sc. | gamma-rays | sevanje gama |
| earth.sc., life.sc. | gamma rays | sevanje gama |
| cultur., nat.sc. | infra-red rays | infrardeči žarki |
| life.sc., fish.farm. | skates and rays | raže (Rajidae) |