Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

hydrogen cyanide

noun

Definition of hydrogen cyanide

  1. 1 :  a poisonous usually gaseous compound HCN that has the odor of bitter almonds

  2. 2 :  hydrocyanic acid



1869

First Known Use of hydrogen cyanide

1869


Medical Dictionary

hydrogen cyanide

noun

Medical Definition of hydrogen cyanide

  1. 1:  a poisonous usually gaseous compound HCN that has the odor of bitter almonds

  2. 2:  hydrocyanic acid




Learn More about hydrogen cyanide


Seen and Heard

What made you want to look up hydrogen cyanide? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

the lowest point

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

fox-in-summer-forest

Which of these is a synonym of inchoate?

experimental formless massive frightening
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ