Element #18
The crossword clue "Element #18" is answered by ARGON, a 5-letter entry. Used 6 times across 6 distinct years; most recently in 2025; first recorded in 2009. It appears in 5 publications in the xd corpus. Every figure on this page comes from the collection data itself, never from a guess.
The answer
ARGON
5 letters. See every clue for this answer on the ARGON answer page.
Used 6 times across 6 distinct years; most recently in 2025; first recorded in 2009. It appears in 5 publications in the xd corpus. Frequency and last-seen figures come from the xd crossword corpus only.
Other clues for ARGON
Every other clue in this collection answered by ARGON, most used first.
- Inert gas - used 61 times, most recently in 2026
- About 1% of the atmosphere - used 24 times, most recently in 2025
- Noble gas - used 18 times, most recently in 2025
- Vacuum tube filler - used 15 times, most recently in 2026
- Light-bulb gas - used 14 times, most recently in 2026
- Vacuum tube gas - used 10 times, most recently in 2014
- A noble gas - used 9 times, most recently in 2025
- Gaseous element - used 9 times, most recently in 1997
- Fluorescent tube gas - used 6 times, most recently in 2012
- Most common noble gas - used 6 times, most recently in 2025
- One of the noble gases - used 6 times, most recently in 2025
Related clues
Clues in this collection of the same answer length that share a word with this clue, or match its answer pattern when no word is shared. Most used first.
- The fifth element - BORON, used 41 times
- Element #5 - BORON, used 34 times
- Gaseous element - RADON, used 17 times
- Element #54 - XENON, used 16 times
- Chemical element - BORON, used 10 times
- Fifth element - BORON, used 10 times
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