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

If that happens, the bulk of the 148 million pounds of antimony at the site would be prioritized during the initial years of operations, the company said. —Kevin Fixler september 20, Idaho Statesman, 20 Sep. 2025

The green light for the mine, backed by billionaire investor John Paulson, comes after Beijing last year blocked exports to the United States of antimony, a metal used to make bullets, solar panels and other goods. —Ernest Scheyder, Reuters, 19 Sep. 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

For example, Nick Spada, a researcher with the UC Davis Air Quality Research Center, has collected dozens of ash samples from the burn scars and, in preliminary findings, found elevated levels of lead, arsenic, cadmium and antimony in the test materials. —Tony Briscoe, Los Angeles Times, 3 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