hydrosulfurous acid

noun
hy·​dro·​sulfurous acid | \ "+...- \

Definition of hydrosulfurous acid

: an unstable acid H2S2O4 known only in aqueous solution formed by reducing sulfurous acid or in the form of salts not used scientifically

called also dithionous acid, hyposulfurous acid

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History and Etymology for hydrosulfurous acid

hydrosulfurous International Scientific Vocabulary hydr- + sulfurous

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Dictionary Entries Near hydrosulfurous acid

hydrosulfuric acid

hydrosulfurous acid

hydrotalcite

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Cite this Entry

“Hydrosulfurous acid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrosulfurous%20acid. Accessed 18 Sep. 2021.

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