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Wordnet 3.0

NOUN (1)

1. a colorless explosive liquid that is volatile and poisonous and foul-smelling;
[syn: hydrazoic acid, azoimide, hydrogen azide, HN]


The Collaborative International Dictionary of English v.0.48:

HN \HN\ n. a colorless explosive liquid that is volatile, poisonous, and foul-smelling. Syn: hydrazoic acid, azoimide. [WordNet 1.5]
WordNet (r) 3.0 (2006):

HN n 1: a colorless explosive liquid that is volatile and poisonous and foul-smelling [syn: hydrazoic acid, azoimide, hydrogen azide, HN]
The Free On-line Dictionary of Computing (30 December 2018):

hn The country code for Honduras. (1999-01-27)