Why was "tantrum" trending last week?
palindromic pal·in·dro·mic (pāl'ĭn-drō'mĭk, -drŏm'ĭk)
palindrome pal·in·drome (pāl'ĭn-drōm')
A segment of double-stranded DNA in which the nucleotide sequence of one strand reads in reverse order to that of the complementary strand.
word, number, sentence, or verse that reads the same backward or forward. The term derives from the Greek palin dromo ("running back again").