kyanise
/ˈkaɪənaɪz/
verb
- To treat wood with a preservative (usually a mercury compound) to protect it from decay.
- Old railway sleepers were often kyanised to withstand years of outdoor exposure.
- Before building the deck, they kyanised all the lumber to prevent rot.
- The carpenter decided to kyanise the fence posts to make them last longer in the wet soil.