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

The rest, in this case about 79% of the bag, is inert ingredients and, sometimes, trace amounts of other nutrients such as calcium, boron, or iron. — Andy Wilcox, Better Homes & Gardens, 16 July 2026

The driver features a three-layer PU and PEEK diaphragm with coating, supported by a dual neodymium, iron boron magnet system and triple sound chamber design. — Mark Sparrow, Forbes.com, 7 July 2026

His team has made clusters of 36 boron atoms in a thin, atom-thick disk; two could be stitched together to create the boron equivalent of graphene. — ArsTechnica, 30 June 2026

The findings suggest that boron nitride nanotubes could serve as a promising platform for next-generation separation technologies. — Bojan Stojkovski, Interesting Engineering, 21 June 2026

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