| Subject | English | Italian |
| comp., MS | SD card | scheda SD (A memory card about the size of a postage stamp that is supported by many types of devices) |
| el. | SD1 etch | aggressivo SD1 |
| med. | SD-sequence | sequenza SD |
| med. | SD-sequence | sito di legame per i ribosomi |
| med. | SD-sequence | sequenza di Shine-Dalgarno |