3 definitions found From WordNet (r) 2.0 [wn]: HN noun: a colorless explosive liquid that is volatile and poisonous and foul-smelling [syn: {hydrazoic acid}, {azoimide}, {hydrogen azide}] From The Collaborative International Dictionary of English v.0.44 [gcide]: HN \HN\ n. a colorless explosive liquid that is volatile, poisonous, and foul-smelling. Syn: hydrazoic acid, azoimide. [WordNet 1.5] From The Free On-line Dictionary of Computing (27 SEP 03) [foldoc]: hn The {country code} for Honduras. (1999-01-27)

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