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: a white crystalline acid B(OH)3 obtained from its salts and used especially as a weak antiseptic and fire-retardant
Examples of boric acid in a Sentence
Recent Examples on the Web
When a roach walks through an area treated with boric acid, the dust clings to its body, later attacking its nervous system when ingested.
—Arricca Elin Sansone, Southern Living, 31 Oct. 2024
Successful treatment involves knowing where the roaches are active and will come in contact with the boric acid.
—Arricca Elin Sansone, Southern Living, 31 Oct. 2024
Make sure the solution contains boric acid and sodium borate, which are needed to form the slime.
4.
—Taylor Grothe, Parents, 1 Oct. 2024
Try boric acid: Like diatomaceous earth, boric acid can be sprinkled around to kill silverfish instantly.
—Sherri Gordon, Health, 7 Sep. 2024
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Word History
Etymology
boron
First Known Use
1825, in the meaning defined above
Dictionary Entries Near boric acid
Cite this Entry
“Boric acid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/boric%20acid. Accessed 25 Dec. 2024.
Kids Definition
boric acid
noun
bo·ric acid
ˌbōr-ik-,
ˌbȯr-
: a white boron-containing weak acid that is used as a mild antiseptic
Medical Definition
boric acid
noun
: a white crystalline acid H3BO3 obtained from its salts and used especially as a weak antiseptic
called also boracic acid, orthoboric acid
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