| 1. | a word, line, verse, number, sentence, etc., reading the same backward as forward, as Madam, I'm Adam or Poor Dan is in a droop. |
| 2. | Biochemistry. a region of DNA in which the sequence of nucleotides is identical with an inverted sequence in the complementary strand: GAATTC is a palindrome of CTTAAG. |

palindrome pal·in·drome (pāl'ĭn-drōm')
n.
A segment of double-stranded DNA in which the nucleotide sequence of one strand reads in reverse order to that of the complementary strand.
palindrome
word, number, sentence, or verse that reads the same backward or forward. The term derives from the Greek palin dromo ("running back again").
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