triphosphoric acid

noun

tri·​phosphoric acid

¦trī+…-

: a polyphosphoric acid H₅P₃O₁₀ that is a partial anhydride of three molecules of orthophosphoric acid, is capable of hydrolysis into orthophosphoric acid and pyrophosphoric acid, and is known chiefly in the form of salts and esters

Word History

Etymology

tri- + phosphoric

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!