mercury cyanide

noun

: a cyanide of mercury

especially : the crystalline poisonous mercuric compound Hg(CN)₂ made usually by reaction of mercuric oxide with hydrocyanic acid and used chiefly in medicine

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now