Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • 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

February 8, 2016

to clear from accusation or blame

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image1037863653

Which of the following refers to thin, bending ice, or to the act of running over such ice?

duvet pince-nez spindrift kittly-benders
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ