Check if your text reads the same forwards and backwards
A palindrome is a word, phrase, number, or sequence of characters that reads the same forwards and backwards. The word comes from Greek: "palin" (again) and "dromos" (way, direction).
Word palindromes: civic, radar, level
Phrase palindromes: "A man, a plan, a canal: Panama"
Number palindromes: 12321, 1001
The longest single-word palindrome in English is "tattarrattat" (coined by James Joyce). Some languages have much longer palindromic words due to their structure.