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Wiktionary
hnn

interj. Indicating thinking or pondering.

Wikipedia
HNN

HNN may refer to:

  • HLN (TV channel), an American television news channel
  • HNN extension, in combinatorial group theory
  • HanunĂ³'o language, spoken in the Pilippines
  • Hawaii News Now, a television program
  • History News Network, a project of the Center for History and New Media at George Mason University