| Subject | English | Catalan |
| math. | composite estimator | estimador compost |
| math. | composite hypothesis | hipòtesi composta |
| math. | composite index number | nombre índex compost |
| environ. | composite pollution Emissions of ozone-degrading gases (CFCs, halons); emissions of greenhouse gases (carbon dioxide, methane, CFCs, nitrous oxides, halons); emissions of acidifying gases (sulfur oxides, nitrogen oxides); emissions of substances that contribute to eutrophication (phosphate and nitrogen-containing materials); emissions of toxic materials (pesticides, radioactive substances, priority toxic substances); solid wastes returned to the environment | contaminació composta |
| math. | composite sampling scheme | esquema de mostreig compost |
| load.equip. | composite wheel | roda composta |