| Answer | Crossword Clue |
|---|---|
| EMERY | Abrasive powder |
| EMERY | Abrasive powder. |
| ALUMINA | White powder used as an abrasive. |
| EMERY | Rock powder used as an abrasive |
| zirconias | white, heavy, amorphous, odorless and tasteless, infusible, water-insoluble powder, ZrO2, used chiefly as a pigment for paints, an abrasive, and in the manufacture of refractory crucibles |
| zirconia | white, heavy, amorphous, odorless and tasteless, infusible, water-insoluble powder, ZrO2, used chiefly as a pigment for paints, an abrasive, and in the manufacture of refractory crucibles |
