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What does HNO stand for?

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Rank Abbr.Meaning
HNOHals-Nasen-Ohren Heilkunde (German: throat, nose and ear medicine)
HNOHals Nasen Ohrenheilkunde
HNOHost Network Operator
HNOHarvard News Office
HNOHelvetica Narrow Oblique (font)
HNOHungarian National Observatory
HNOHouston-New Orleans, Inc. (Houston, TX)

Note: We have 20 other definitions for HNO in our Acronym Attic