| Subject | English | Basque |
| comp., MS | composite character | karaktere konposatu (A text element consisting of a base character and a diacritic or accent mark. Although most common in the Latin script, other scripts (including Greek, Devanagari, and Tamil) also have composite characters) |
| math. | composite estimator | zenbatesle konposatua |
| math. | composite hypothesis | hipotesi konposatu |
| math. | composite index number | konposatu indizea zenbakia |
| 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 | poluzio konposatu |
| math. | composite sampling scheme | konposatu laginketa eskema |