Last seen in:
- The Times - Concise - Times Concise No 8955
- The Times - Concise - Times Concise No 8268
- The Times - Concise - Times Concise No 8102
- The Guardian - Quick crossword No 15,241 - Mar 14 2019
- The Times - Concise - Times Concise No 7771
- The Washington Post - May 26 2018
- L.A. Times Daily - May 26 2018
- The Telegraph - QUICK CROSSWORD NO: 28,258 - Oct 29 2016
- The Guardian - Quick crossword No 14,236 - Dec 24 2015
- The Times - Concise - Times2 Concise 6591 - December 23, 2014
Related Clues:
- Nitrogen-hydrogen compound
- Layer that absorbs ultraviolet rays
- Ultraviolet filterer
- Layer with a problematic hole
- Atmospheric screen
- Ultraviolet filter
- Cleaner additive
- Threatened layer
- Imperiled layer
- Household cleaning chemical
- __ layer
- A high flier may fly in it
- Eco-worry
- UV blocker
- Ultraviolet ray absorber