Wiktionary
n. (context inorganic compound English) The poisonous and explosive compound HN3
WordNet
n. a colorless explosive liquid that is volatile and poisonous and foul-smelling [syn: azoimide, hydrogen azide, HN]
Wikipedia
Hydrazoic acid, also known as hydrogen azide or azoimide, is a colorless, volatile, and explosive liquid at room temperature and pressure. It is a compound of nitrogen and hydrogen, having chemical formula HN. It was first isolated in 1890 by Theodor Curtius. The acid has few applications, but its conjugate base, the azide ion, is useful in specialized processes.
Hydrazoic acid is soluble in water. Undiluted hydrazoic acid is dangerously explosive with a standard enthalpy of formation ΔH (l, 298K) = +264 kJmol). When dilute, the gas and aqueous solutions (<10%) can be safely handled.
Usage examples of "hydrazoic acid".
The alien complex would explode, perhaps by setting off that hydrazoic acid buried beneath the subterranean glacier, taking itself and the local human colony with it.