| 3 clues |
|---|
| Superlight porous solid |
| Extremely lightweight material |
| Skylight insulation material, perhaps |
| Aareaditalaeaer |
| Aer |
| Aera |
| Aerate |
| Aerated |
| Aeratepipetarea |
| Aerates |
| Aerating |
| Aeration |
| Aerator |
| Aerators |
| Aered |
| Aereo |
| Aeri |
| Aeria |
| Aerial |
| Aerialassault |
| Aerialcombat |
| Aerialist |
| Aerialists |