palindromic Describing a section of double-stranded DNA in which the sequence of bases on one strand is inverted and repeated on the other. Thus the following sequence is palindromic: —ACTTGCAAGT——TGAACGTTCA—

Palindromic sequences are common in DNA and are the sites at which the DNA is cleaved by restriction enzymes.

palindromic (pal-in-drom-ik) adj. relapsing: describing diseases or symptoms that recur or get worse.