strontium nitrate

noun

: a salt Sr(NO₃)₂ that crystallizes from hot strong solutions in anhydrous form and from cold solutions as the tetrahydrate and that is used chiefly in fireworks, flares, and tracer bullets

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!