antifreeze

noun

an·​ti·​freeze ˈan-ti-ˌfrēz 

1

: a substance added to a liquid (such as the water in an automobile engine) to lower its freezing point

2

: any of various substances (such as proteins or alcohols) that are found in some living organisms (such as certain fish and insects) and serve to lower the freezing point of body fluids especially by limiting ice crystal growth

Examples of antifreeze in a Sentence

Recent Examples on the Web

His death was ruled a homicide by the medical examiner, however, after elevated amounts of antifreeze were found in his system during his autopsy. —Chris Spargo, People.com, 27 June 2025

An autopsy revealed the husband was poisoned with antifreeze, and his wife was revealed as a suspect in his death, the publication reported. —Mike Stunson, Kansas City Star, 26 June 2025

Some vibrate aggressively to scare predators; others create their own antifreeze to survive the cold. —Gayoung Lee, Scientific American, 24 Apr. 2025

Their leaves have tough, hard tips that can break through frozen ground, and their cells contain proteins that act as a natural antifreeze to weather the cold. —Carlyn Kranking, Smithsonian Magazine, 25 Mar. 2025

Word History

First Known Use

1903, in the meaning defined at sense 1

Rhymes for antifreeze

• abcs
• absentees
• addressees
• adoptees
• allottees
• amputees
• appellees
• appointees
• arrestees
• artistes
• assamese
• assignees

Kids Definition

antifreeze

noun

an·​ti·​freeze ˈant-i-ˌfrēz 

: a substance added to a liquid (as the water in an automobile radiator) to prevent freezing