1. hydrogen cyanide

noun. 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.
Synonyms
chemical compound compound
Antonyms
smooth rough simple

2. hydrogen-bomb

verb. Attack with a hydrogen bomb.
Synonyms
bombard bomb
Antonyms
defend dumb bomb smart bomb

3. hydrogen

noun. (ˈhaɪdrədʒən) A nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe.
Synonyms
atomic number 1 chemical element gas tritium H H2O water element
Antonyms
understate unleaded gasoline leaded gasoline defend fresh water
Etymology
hydrogen (English)
hydrogène (French)
-gène (French)
hydro- (French)
ὑδρο- (Ancient Greek (to 1453))

4. cyanide

noun. (ˈsaɪəˌnaɪd, ˈsaɪˌnaɪd) An extremely poisonous salt of hydrocyanic acid.
Synonyms
sodium cyanide salt potassium cyanide
Antonyms
dull
Etymology
cyanide (English)
-ide (English)
cyano- (English)
κυάνεος (Ancient Greek (to 1453))

5. cyanide

noun. (ˈsaɪəˌnaɪd, ˈsaɪˌnaɪd) Any of a class of organic compounds containing the cyano radical -CN.
Synonyms
vinyl cyanide propenonitrile acrylonitrile nitril nitrile organic compound
Etymology
cyanide (English)
-ide (English)
cyano- (English)
κυάνεος (Ancient Greek (to 1453))
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