| Answer | Crossword Clue |
|---|---|
| burster | celestial source from which bursts of x-rays are received |
| bursters | celestial source from which bursts of x-rays are received |
| anticathode | the target of an X-ray tube, on which the cathode rays are focused and from which X-rays are emitted |
| anticathodes | ANTICATHODE, the target of an X-ray tube, on which the cathode rays are focused and from which X-rays are emitted |
| astigmatism | a defect in the eye or a lens by which rays from a single source are not focused at a single point also ASTIGMIA |
| astigmatisms | ASTIGMATISM, a defect in the eye or a lens by which rays from a single source are not focused at a single point also ASTIGMIA |
