hydrogen cyanide


Definition: Meaning of, hydrogen cyanide in English to English dictionary.

Pronunciation: / ˈhʌɪdrədʒ(ə)n ˈsʌɪənʌɪd /

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  1. a highly poisonous gas or volatile liquid that smells like bitter almonds; becomes a gas at around 90 degree Fahrenheit and is most dangerous when inhaled; the anhydride of hydrocyanic acid; used in manufacturing
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the large SQUARE (= a broad, open area in a town) in the centre of Moscow, famous especially for the military processions that took place there on MAY DAY when Moscow was the capital of the SOVIET UNION . The buildings in Red Square include St Basil's Cathedral and the Tomb of Lenin.