| Subject | English | Maltese |
| chem. | Flammable solid. | Solidu li jaqbad. |
| chem. | flammable solid | materjal solidu li jaqbad |
| gen. | mixed municipal solid waste | skart solidu muniċipali mħallat |
| gen. | municipal solid waste | skart solidu muniċipali |
| chem. | non-powder solid | solidu mhux ippolverizzat |
| pharma. | oral solid dosage form | forma ta' dożaġġ orali solida |
| chem. | oxidising solid | materjal solidu ossidanti |
| chem. | pyrophoric solid | materjal solidu piroforiku |
| chem. | readily combustible solid | materjal solidu kombustibbli malajr |
| energ.ind. | solid fuel | fjuwil solidu |
| environ. | solid matter A crystalline material, that is, one in which the constituent atoms are arranged in a three-dimensional lattice, periodic in three independent directions | materja solida |
| 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 | partiċella solida |
| el. | solid state | stat solidu |
| environ. | solid state The physical state of matter in which the constituent molecules, atoms, or ions have no translatory motion although they vibrate about the fixed positions that they occupy in a crystal lattice | stat solidu |
| el. | solid-state lighting | Solid State Lighting |
| health. | solid tumour | tumur solidu |
| environ. | solid waste Discarded solid materials. Includes agricultural waste, mining waste, industrial waste and municipal waste | skart solidu |
| environ. | solid waste disposal The orderly discarding, release, collection, treatment or salvaging of unwanted or useless non-liquid, non-soluble refuse | rimi ta' skart solidu |
| environ. | suspended solid | solidu sospiż |
| environ. | suspended solid | materja sospiża |
| environ. | suspended solid | sustanza sospiża |
