caustic soda

noun

: sodium hydroxide

Examples of caustic soda in a Sentence

Recent Examples on the Web

It is used by the chlor-alkali industry, which produces bleach, caustic soda and other products. — Matthew Daly, Quartz, 18 Mar. 2024

The process enhances high-contrast laser etching and reduces caustic soda consumption in sulfur mercerizing. — Angela Velasquez, Sourcing Journal, 27 Oct. 2025

Then it’s washed only with water—no caustic soda, detergents, or bleach—and treated with bio-enzymes instead of silicone or other synthetic finishes. — Alden Wicker, WIRED, 9 July 2024

State officials investigated, discovering that the machine in charge of releasing caustic soda, used to treat arsenic, had malfunctioned, causing an unhealthy amount of pH buildup in the water. — Silvia Foster-Frau, Washington Post, 18 Apr. 2024

Word History

First Known Use

1796, in the meaning defined above

Rhymes for caustic soda

• amphipoda
• copepoda
• decapoda
• gastropoda
• isopoda
• nematoda
• coda
• oda
• toda
• ostracoda
• pagoda

Kids Definition

caustic soda

noun

: sodium hydroxide

Medical Definition

caustic soda

noun

: sodium hydroxide