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: a metalloid chemical element that is found in nature only in combination and that is used especially in borosilicate glass and detergents see Chemical Elements Table
Examples of boron in a Sentence
Recent Examples on the Web
Mining giant Rio Tinto is experimenting with ways to extract lithium that exists in boron mining waste, and a Canadian startup is working to recover rare earths from tin-mine tailings.
—Vince Beiser, WIRED, 30 Nov. 2024
If needed, information on applying boron as a nutrient can be obtained by doing a search for boron deficiency in palms.
—Tom MacCubbin, Orlando Sentinel, 30 Nov. 2024
Built around a large neodymium iron boron magnet, the 40mm diameter drivers have a wide dynamic range and nimble transient response.
—Mark Sparrow, Forbes, 4 Nov. 2024
Speaking of biodiversity, the Biden administration has approved a massive lithium and boron mine in Nevada despite concerns from some environmentalists that the project could kill off an endangered wildflower, according to the Washington Post.
—Alex Wigglesworth, Los Angeles Times, 29 Oct. 2024
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Word History
Etymology
borax + -on (as in carbon)
First Known Use
1812, in the meaning defined above
Phrases Containing boron
Dictionary Entries Near boron
Cite this Entry
“Boron.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/boron. Accessed 23 Dec. 2024.
Kids Definition
boron
noun
bo·ron
ˈbō(ə)r-ˌän
ˈbȯ(ə)r-
: a metalloid element found in nature only in combination (as in borax) see element
Medical Definition
boron
noun
bo·ron
ˈbō(ə)r-ˌän, ˈbȯ(ə)r-
: a trivalent metalloid element found in nature only in combination and used in metallurgy and in composite structural materials
—symbol B
see Chemical Elements Table
More from Merriam-Webster on boron
Nglish: Translation of boron for Spanish Speakers
Britannica.com: Encyclopedia article about boron
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