copper hydroxide

noun

: a hydroxide or hydrated oxide of copper

specifically : the hydroxide Cu(OH)₂ obtained as a blue precipitate by the action of alkali on cupric salt solutions or as blue crystals and used chiefly as a mordant and in preparing cuprammonium solution

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

• More than 250,000 words that aren't in our free dictionary
• Expanded definitions, etymologies, and usage notes
• Advanced search features
• Ad free!