anhydrous

adjective

an·​hy·​drous (ˌ)an-ˈhī-drəs 

: free from water and especially water of crystallization

Examples of anhydrous in a Sentence

Recent Examples on the Web

In January 2020, one subcontractor was killed and another worker was hurt after an anhydrous ammonia leak at a Lineage facility in North Carolina, according to local reporting. —Taylor O'Connor, Kansas City Star, 12 Aug. 2025

When Johnson was a 12-year-old growing up in Shreveport, his father Pat, a firefighter, was called to a cold-storage plant because of an anhydrous ammonia leak. —Eric Cortellessa, Time, 7 Aug. 2025

The prepared sections were cleaned up using anhydrous ethanol before drying at 50 °C in a baking oven. —Keith Cooper, Space.com, 16 July 2025

Its alcohol-free, anhydrous wax base instantly melts onto the skin without leaving a greasy feel behind—just a subtle trail of its lush, hazy scent. —Jennifer Hussein, Allure, 14 Jan. 2025

Word History

Etymology

Greek anydros, from a- + hydōr water — more at water

First Known Use

1802, in the meaning defined above

Rhymes for anhydrous

• hydrous

Kids Definition

anhydrous

adjective

an·​hy·​drous (ˈ)an-ˈhī-drəs 

: free from water

Medical Definition

anhydrous

adjective

an·​hy·​drous (ˈ)an-ˈhī-drəs 

: free from water and especially water that is chemically combined in a crystalline substance

anhydrous ammonia