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palindrome

[pal-in-drohm]
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noun
  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.
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Origin of palindrome

1620–30; < Greek palíndromos recurring, equivalent to pálin again, back + -dromos running (see -drome)
Related formspa·lin·dro·mist [puh-lin-droh-mist] /pəˈlɪn droʊ mɪst/, nounpal·in·drom·ic [pal-in-drom-ik, -droh-mik] /ˌpæl ɪnˈdrɒm ɪk, -ˈdroʊ mɪk/, pal·in·drom·i·cal, adjectivepal·in·drom·i·cal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for palindromically

palindrome

noun
  1. a word or phrase the letters of which, when taken in reverse order, give the same word or phrase, such as able was I ere I saw Elba
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Derived Formspalindromic (ˌpælɪnˈdrɒmɪk), adjective

Word Origin

C17: from Greek palindromos running back again, from palin again + -drome
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for palindromically

palindrome

n.

"line that reads the same backward and forward," 1620s, from Greek palindromos "a recurrence," literally "a running back," from palin "again, back" (from PIE root *kwel- "move round," with notion of "revolving; see cycle (n.)) + dromos "a running" (see dromedary). Related: Palindromic.

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Online Etymology Dictionary, © 2010 Douglas Harper
palindromically in Medicine

palindrome

(păl′ĭn-drōm′)
n.
  1. A segment of double-stranded DNA in which the nucleotide sequence of one strand reads in reverse order to that of the complementary strand.
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Related formspal′in•dro′mic (-drō′mĭk, -drŏm′ĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.