| Answer | Crossword Clue |
|---|---|
| IONIC | .. compound (electrical insulator) |
| MUSCOVITE | Mica that's used as an electrical insulator |
| pressboard | A hard, dense kind of board with a smooth finish, typically made from wood or textile pulp or laminated wastepaper, and used as an electrical insulator and for making light furniture |
| semiconductor | an element or compound having a resistivity between that of a conductor and an insulator |
| semiconductors | SEMICONDUCTOR, an element or compound having a resistivity between that of a conductor and an insulator |
