| Answer | Crossword Clue |
|---|---|
| METEORS | Elements of certain showers |
| ORIONIDS | Certain showers of meteors. |
| METEORS | Contents of certain showers |
| exudation | discharge of certain elements of the blood into the tissues |
| diadochy | the ability of certain different elements to exist in place of each other in certain points of a space lattice; isomorphism |
| coronium | hypothetical element once thought to exist because certain spectral lines in the emission spectrum of the solar corona could not be identified by known elements. These lines were subsequently found to be emitted by certain highly ionized metals |
