Equal: Prefix
The crossword clue "Equal: Prefix" is answered by ISO, a 3-letter entry. Used 123 times across 56 distinct years; most recently in 2026; first recorded in 1951. It appears in 18 publications in the xd corpus. Every figure on this page comes from the pilot data itself.
The answer
ISO
3 letters. See every clue for this answer on the ISO answer page.
Used 123 times across 56 distinct years; most recently in 2026; first recorded in 1951. It appears in 18 publications in the xd corpus. Frequency and last-seen figures come from the xd crossword corpus only.
Other answers for this clue
The same clue has also been answered these ways in the xd corpus. Answers inside this pilot link to their own answer page.
- PARI (23 uses in xd)
Related clues
Pilot clues 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.
- Green prefix - ECO, used 431 times
- Earth-friendly prefix - ECO, used 181 times
- Prefix with center - EPI, used 134 times
- Recent: Prefix - NEO, used 120 times
- Environmental prefix - ECO, used 114 times
- Prefix with natal - NEO, used 100 times
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