What is the longest palindrome in English?

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Tags

1. #coined
2. #longest
3. #detartrate
4. #meaning
5. #knock
6. #james
7. #palindromic
8. #guinness
9. #onomatopoeic
10. #participle
11. #records
12. #chemical
13. #english
14. #dictionary
15. #detartrated
16. #joyce
17. #gives
18. #preterite
19. #title
20. #ulysses
21. #remove
22. #oxford
23. #tattarrattat
24. #tartrates