| Answer | Crossword Clue |
|---|---|
| toroidal | pertaining to a toroid (a type of geometric surface) |
| toroidally | TOROIDAL, pertaining to a toroid (a type of geometric surface) |
| toroids | TOROID, a type of geometric surface |
| opencast | noting or pertaining to a type of surface mining in which coal and other flat-lying mineral deposits are removed by the excavation of long, narrow trenches |
| toroid | a type of geometric surface |
