| digrignare | grind |
| digrignare i denti | gnash one's teeth |
| diguazzare | splash |
| Digueillo | Digueillus |
| Digão | Digão |
| Dii | Dii |
| Diidrofolato reduttasi | Dihydrofolate reductase |
| Diidrossiacetone fosfato | Dihydroxyacetone phosphate |
| diidrossibenzene | dihydroxybenzene |
| diidrossifenilalanina | dihydroxyphenylalanine |
| Diidrotestosterone | Dihydrotestosterone |
| diidruro | dihydride |
| diilettantesco | dilettantish |
| Dikembe Mutombo | Dikembe Mutombo |
| Diksmuide | Diksmuide |
| Dikson | Dikson |
| Diktat | Order |
