| CICADAS | Insects that have been used as money, in medicine and to predict the weather (7) |
| COWRIE | Shells of this marine mollusc have been used as money in some countries |
| CLOUDS | With four main types: cirrus, cumulus, nimbus and stratus, meteorological masses used to predict the weather and studied in nephology (6) |
| BAROMETER | Indicator of success or situational change; named after an instrument used to predict the weather (9) |
| ANTS | Insects that have displaced most gnats? |
| FLUTES | Instruments played using embouchure that have been used to depict birds in classical pieces by Messiaen, Prokofiev, Respighi and Saint-Saens (6) |
| TULIP | A flower bulbs once used as money in Holland (5) |
| ECU | Either of two coins that have been used in France |
| UPPSALA | Historic Swedish city known for its prestigious university, founded in 1477, and as a global center for research, particularly in medicine and life sciences. (7) |
| ATACAMA | Chilean desert which has been used as a site for Mars expedition simulations because of its similarities to the Martian environment (7) |
| CAMPION | Said in classical times to have been used for victors' crowns, a pink, red or white wild flower whose genus name Silene derives from the name of wine god Dionysus' drunken tutor (7) |
| CALAMUS | Aromatic roots of Acorus ------- is used in medicine and cooking (7) |
| CAMPHOR | Aromatic substance obtained from the wood of an East Asian evergreen tree, used in medicines and mothballs (7) |
| CASERTA | Italian city whose Royal Palace has been used as a set in two "Star Wars" films |
| ARAMAIC | Language believed to have been used in original Bible (7) |
| ANTHRAX | The spores of this cattle disease have been used in biological terrorism |
| FLEAWORT | A plant in the Plantago genus whose seeds have been used as a laxative (8) |
| COWRIES | Shells used as money |
| FUTUREPERFECT | Optimistic prediction will have been used as an example |
| ESMERALDA | Sailiing ship in the Chilean navy, this training vessel is alleged to have been used for detention and torture in the post-Allende period |
