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

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

There were also levels of antimony already present in the liquid. —Stephanie Edwards, Discover Magazine, 25 June 2025

In addition to its applications related to renewable energy, antimony is also integral to the production of tungsten steel and is used in a wide variety of other military applications. —David Blackmon, Forbes, 6 Jan. 2025

Along with the presence of lead, there were also high concentrations of antimony, chromium, and nickel. —Stephanie Edwards, Discover Magazine, 25 June 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