| Answer | Crossword Clue |
|---|---|
| FERRO | Iron-indicating prefix |
| HEXA | Prefix indicating six |
| DECA | Prefix indicating ten |
| ROBO | Prefix indicating automation |
| HEMI | Prefix indicating "half" |
| YESTER | Prefix indicating priority |
| PRE | Prefix indicating priority |
| ECONO | Prefix indicating cheapness |
| SNO | Product prefix indicating coldness |
| OZON | Prefix indicating a certain gas. |
| UGRO | Prefix indicating an Asian people. |
| trimethyl | a prefix or combining form (also used adjectively) indicating the presence of three methyl groups |
