| Answer | Crossword Clue |
|---|---|
| quad | to space by means of quadrats |
| quadded | QUAD, to space by means of quadrats |
| quads | QUAD, to space by means of quadrats |
| radio | signalling through space, without connecting wires, by means of electromagnetic waves / to transmit by radio |
| vacuums | space partially exhausted (as to the highest degree possible) by artificial means (as an air pump) |
| vacua | space partially exhausted (as to the highest degree possible) by artificial means (as an air pump) |
