| Answer | Crossword Clue |
|---|---|
| wingspans | WINGSPAN, the distance between the tips of the two wings |
| wingspan | the distance between the tips of the two wings |
| theremin | musical instrument with electronic tone generation, the pitch and tone volume being controlled by the distance between the player's hands and two metal rods serving as antennas |
| isometry | function from one metric space onto a second metric space having the property that the distance between two points in the first space is equal to the distance between the image points in the second space |
| brackets | The distance between two artillery shots fired either side of the target to establish range |
