| Subject | English | Portuguese |
| el. | attenuation by solid particles | atenuação pelas partículas sólidas |
| environ. | solid particle Any tiny or very small mass of material that has a definite volume and shape and resists forces that would alter its volume or shape | partículas sólidas |
| environ. | solid particle | partículas sólidas |
| gen. | solid particle | partícula sólida |