antimony

noun

an·​ti·​mo·​ny ˈan-tə-ˌmō-nē 

1

: stibnite

2

: a trivalent and pentavalent metalloid element with atomic number 51 that commonly occurs in a brittle, metallic, silvery white crystalline form and that is used especially in alloys, semiconductors, and flame-retardant substances see Chemical Elements Table

Examples of antimony in a Sentence

Recent Examples on the Web

Tarragona kids had higher levels of some substances like antimony and arsenic due to regional factors. —New Atlas, 23 June 2025

Choi told Fortune that antimony was not initially on the company’s radar. —Nicholas Gordon, Fortune Asia, 20 Jan. 2025

Additionally, the researchers found that disposable e-cigarettes contained antimony — a toxic metalloid — which wasn’t previously seen in older generations of e-cigarettes. —Elizabeth Yuko, Rolling Stone, 27 June 2025

Last December, China banned exports to the U.S. of gallium, germanium and antimony that have widespread military uses. —Rick Barrett, jsonline.com, 7 July 2025

Word History

Etymology

Middle English antimonie, from Medieval Latin antimonium

First Known Use

15th century, in the meaning defined at sense 1

Rhymes for antimony

• abalone
• acrimony
• alimony
• ceremony
• chalcedony
• cicerone
• cosmogony
• eurozone
• lithopone
• macaroni
• matrimony
• naloxone

Kids Definition

antimony

noun

an·​ti·​mo·​ny ˈant-ə-ˌmō-nē 

: a metallic silvery white element that is used especially in alloys and medicine see element

Medical Definition

antimony

noun

an·​ti·​mo·​ny ˈant-ə-ˌmō-nē 

plural antimonies

: a trivalent and pentavalent metalloid element that is commonly metallic silvery white, crystalline, and brittle and is used especially in alloys and semiconductors and in medicine as a constituent of various antiprotozoal agents (as tartar emetic)

—symbol Sb see Chemical Elements Table