palindrome

noun4

1. •
   A word, phrase, number or any other sequence of units which has the property of reading the same forwards as it does backwards, character for character, sometimes disregarding punctuation, capitalization and diacritics.

   • The only thing exciting about 2002 is that it's a palindrome. — 2017
2. •
   A poetic form in which the sequence of words reads the same in either direction.
3. •
   A sequence of items that follows the same pattern both forwards and backwards.

   • The shops opposite were a High Street palindrome — Korean gorocery, courier service, letting abgents, courier service, Korean grocery — and buses passed with noisy frequency. — 2010
4. •
   A stretch of DNA in which the sequence of nucleotides on one strand are in the reverse order to that of the complementary strand