Found 2 items, similar to HN.
English → English (WordNet) Definition: HN HN n : a colorless explosive liquid that is volatile and poisonous and foul-smelling [syn: hydrazoic acid, azoimide, hydrogen azide ]
English → English (gcide) Definition: HN HN \HN\ n. a colorless explosive liquid that is volatile, poisonous, and foul-smelling. Syn: hydrazoic acid, azoimide. [WordNet 1.5]