-
- To save this word, you'll need to log in.
sulfurous acid
noun
: a weak unstable dibasic acid H2SO3 known in solution and through its salts and used as a reducing and bleaching agent
Examples of sulfurous acid in a Sentence
Recent Examples on the Web
Otherwise, the sulfur dioxide released from the bubbling lava would turn the watery fluid in your eyes’ mucus membranes into sulfurous acid.
—Sofie Bates, Popular Mechanics, 30 June 2020
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Word History
First Known Use
1790, in the meaning defined above
Dictionary Entries Near sulfurous acid
Cite this Entry
“Sulfurous acid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sulfurous%20acid. Accessed 22 Nov. 2024.
Kids Definition
sulfurous acid
noun
: a weak acid known especially in mixtures of sulfur dioxide with water and through its salts and used in bleaching
Medical Definition
sulfurous acid
noun
: a weak unstable dibasic acid H2SO3 known in solution and through its salts and used as a reducing and bleaching agent and in medicine as an antiseptic
More from Merriam-Webster on sulfurous acid
Britannica.com: Encyclopedia article about sulfurous acid
Love words? Need even more definitions?
Merriam-Webster unabridged
Share