Last seen in:
- The Times - Concise - Times Concise No 9356
- The Sun - Two Speed - Apr 29 2021
- Newsday.com - Mar 15 2020
- The Sun - Two Speed - Jan 20 2020
- The Sun - Two Speed - Feb 4 2019
- The Sun - Two Speed - Jul 4 2018
- The Sun - Two Speed - Apr 19 2018
- Irish Times (Simplex) - Jul 23 2008
- The Guardian - Quick crossword No 11,079 - Nov 8 2005
- Irish Times (Simplex) - Aug 10 2005
Related Clues:
- Iron or tin
- Nitrogen or oxygen
- Earth, wind or fire, to an early scientist
- Natural environment
- Periodic-table component
- Silver or sulfur
- Gold or silver, but not bronze
- Helium or hydrogen
- Gold, e.g.
- 21-Down, e.g.
- A first principle, found in a kettle?
- Constituent part (7)
- Constituent component
- Chemically and currently it may be glowing
- One might find one in the bulb in the laboratory