chromated copper arsenate

play
noun chro·mat·ed copper arsenate \ˈkrō-ˌmā-təd-\

Definition of chromated copper arsenate

  1. :  a chemical combination of chromium, copper, and arsenic used to protect wood against insects and decay Then, in the 1930s, scientists found a way to infuse wood with a solution that included copper (toxic to the fungi that cause rot) and arsenic (then the most common insecticide). To ensure the protection would last and builders and the environment wouldn't be hurt, they also added chromium. It triggered a chemical reaction that locked the pesticides into the wood. The formula became known as chromated copper arsenate, or just CCA. But the industry called it pressure-treated because the chemicals were injected under great pressure. — Curtis Rist —abbreviation CCA

First Known Use of chromated copper arsenate

1962


Seen and Heard

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

Love words? Need even more definitions?

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

WORD OF THE DAY

conspicuously offensive

Get Word of the Day daily email!

Love words? Need even more definitions?

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