boron

noun

bo·​ron ˈbȯr-ˌän 

: 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

boronic

bȯr-ˈä-nik 

adjective

Examples of boron in a Sentence

Recent Examples on the Web

Solar cells are often doped with boron instead of gallium. —Maddie Stone, WIRED, 15 Feb. 2025

Though Earth’s soda lakes are somewhat chemically similar to Bennu’s ancient brines, the asteroid has a couple of clear differences: an abundance of phosphorus and a lack of boron. —Ella Jeffries, Smithsonian Magazine, 29 Jan. 2025

These nutrients support both bone growth and maintaining bone mineral density. Support bone growth and maintenance: Boron is a trace mineral essential for bone growth and maintenance, and raisins are one of the best food sources of boron. —Melissa Nieves, Verywell Health, 15 Jan. 2025

The researchers began by testing a glass formed from a mixture of boron, sulfur, and lithium (B2S3 and Li2S). —Ashley Belanger, Ars Technica, 17 Jan. 2025

Word History

Etymology

borax + -on (as in carbon)

First Known Use

1812, in the meaning defined above

Phrases Containing boron

• boron carbide

Rhymes for boron

• anton
• argon
• axon
• baronne
• baryon
• baton
• buisson
• bygone
• capon
• cardon
• chiffon
• coupon

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

boronic

bȯr-ˈän-ik, bōr- 

adjective