perrhenic acid

noun

per·​rhenic acid

¦pər,

pə,

(ˈ)per+…- -

: either of two acids formed by the oxidation of rhenium or rhenium compounds of lower valence states and known only in solution or in the form of salts:

a

: the monobasic acid HReO₄ analogous to permanganic acid that forms colorless stable salts

called also metaperrhenic acid

b

: the tribasic acid H₃ReO₅ that forms yellow salts turning red when heated and hydrolyzed in water to salts of metaperrhenic acid

called also mesoperrhenic acid

Word History

Etymology

per- + New Latin rhenium + English -ic

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!