| Subject | English | Croatian |
| comp., MS | Blu-ray Disc | Blu-ray disk (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) |
| nat.sc. | cosmic ray | kozmička radijacija |
| fish.farm. | cuckoo ray | raža smedja (Raja naevus) |
| fish.farm. | eagle ray | golub (Aetobatus narinari, Myliobatidae, Myliobatis acquila, Myliobatis freminvillei, Myliobatis goodei, Myliobatis tenuicandatus, Pteromylaeus bovinus) |
| fish.farm. | electric ray | drhtulja (Narcine brasiliensis, Torpedinidae, Torpedo californica, Torpedo marmorata, Torpedo nobiliana, Torpedo torpedo, torpedo ocellata, torpedo narke) |
| fish.farm. | painted ray | raža (Raja microocellata) |
| fish.farm. | ray's bream | grboglavka (Brama brama, brama rayi) |
| fish.farm. | sandy ray | heitarausku (Raja circularis) |
| fish.farm. | shagreen ray | raža crnopjega (Raja fullonica) |
| fish.farm. | spotted ray | raža crnopježica (Raja montagui) |
| fish.farm. | starry ray | ražica blije dopjega (Raja asterias, raja punctata) |
| fish.farm. | thornback ray | raža kamenjarka (Raja clavata) |
| environ. | X ray | rendgenska zraka |
| health. | X-ray contrast media | kontrastna sredstva za radiografska ispitivanja |
| fish.farm. | óndulate ray | raža vijopruga (Raja undulata) |