| clay mineral type 1:1 | mineral liat tipe 1:1 | mineral liat jenis 1:1 | mineral lempung jenis 1:1 | Pertanian |
| 1-1 correspondence | padanan 1-1 | Tiada | Tiada | Matematik |
| T-1 | T-1 | T-1 | T-1 | Teknologi Maklumat |
| 1, 4-heptonalakton | 1, 4-heptonalakton | 1, 4-heptonalakton | 1, 4-heptonalakton | Kimia |
| propan-1-ol | 1-ol-propan | 1-ol-propan | 1-ol-propan | Kimia |
| level-1 cache | tembolok aras 1 | cache peringkat 1 | cache peringkat 1 | Teknologi Maklumat |
| propan-1, 2-diol | propana-1, 2-diol | propana-1, 2-diol | propana-1, 2-diol | Kimia |
| propan-1, 2-diol alginate | propana-1, 2-diol alginat | propana-1, 2-diol alginat | propana-1, 2-diol alginat | Kimia |
| D-glucono-1, 5-lactone | D-glukono-1, 5-lakton | D-glukono-1, 5-lakton | D-glukono-1, 5-lakton | Kimia |
| clay mineral type 2:1 | mineral liat tipe 2:1 | mineral liat jenis 2:1 | mineral lempung jenis 2:1 | Pertanian |