iso·​cy·​a·​nate | \ ˌī-sō-ˈsī-ə-ˌnāt How to pronounce isocyanate (audio) , -nət \

Definition of isocyanate

: an ester of isomeric cyanic acid used especially in plastics and adhesives

Examples of isocyanate in a Sentence

Recent Examples on the Web If all goes as planned, Sadara will crank out multiple tons of the glycol ethers, isocyanates and other chemicals used in everything from golf balls and gum to sofas and soaps. Javier Blas,, "From Oil Gushers to Golf Balls: Saudi Aramco Bets on Chemicals," 2 July 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'isocyanate.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of isocyanate

1872, in the meaning defined above

History and Etymology for isocyanate

International Scientific Vocabulary

Keep scrolling for more

Learn More about isocyanate

Time Traveler for isocyanate

Time Traveler

The first known use of isocyanate was in 1872

See more words from the same year

Statistics for isocyanate

Cite this Entry

“Isocyanate.” Dictionary, Merriam-Webster, Accessed 25 Nov. 2020.

More from Merriam-Webster on isocyanate Encyclopedia article about isocyanate

Comments on isocyanate

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


Test Your Vocabulary

A Thanksgiving Word Quiz

  • a traditional thanksgiving dinner
  • November comes from a word for which of the following numbers?
Spell It

Can you spell these 10 commonly misspelled words?


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

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!