| zhì | hostage/substance/nature/quality/Taiwan pr. zhi2 |
| 质 | character nature quality |
| 质优 | of fine quality |
| 质体 | plastid; plasmid; plastidium; plasmids; trophoplast |
| 质体基因 | plastogene |
| 质体醌 | plastoquinone |
| 质变 | qualitative change fundamental change |
| 质因数 | prime factor (in arithmetic) |
| 质地 | texture background (texture) grain |
| 质壁分离 | plasmolysis; plasmolyze |
| 质子 | proton (positively charged nuclear particle) a prince sent to be held as a hostage in a neighbouring state in ancient China |
| 质子共振 | proton resonance |
| 质子加速器 | a proton accelerator |
| 质子数 | proton number in nucleus atomic number |
| 质子轰击 | proton bombardment |
| 质对 | verify; check; confrontation |
| 质库 | pawnshop (old) |
| 质心 | center of gravity barycenter |
| 质心坐标 | barycentric coordinates; mass centric coordinates |
| 质感 | realism (in art) sense of reality texture |
| 质押书 | a letter of hypothecation |