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

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

Read Next National Dad laced newborn’s breastmilk with antifreeze, Georgia cops say. —Brooke Baitinger, Idaho Statesman, 10 Jan. 2025

Its high toxicity comes from ethylene glycol, the main ingredient of antifreeze. —Kamron Sanders, Better Homes & Gardens, 1 Jan. 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