sodium bicarbonate

noun

: a white crystalline weakly alkaline salt NaHCO₃ used especially in baking powders and fire extinguishers and in medicine as an antacid

called also baking soda, bicarbonate of soda

Examples of sodium bicarbonate in a Sentence

Recent Examples on the Web

Baking soda, or sodium bicarbonate, is a base. —Brandee Gruener, Southern Living, 4 June 2026

There’s been some chatter online that adding baking soda (sodium bicarbonate) to the soil can help increase coneflower (Echinacea) blooms by raising the soil’s pH, but gardeners caution that whether the hack is helfpul or not ultimately depends on your soil. —Cori Sears, The Spruce, 2 June 2026

Crews utilized sodium bicarbonate to safely neutralize the acid. —Paula Wethington, CBS News, 28 May 2026

Hearing evidence indicated that Ali administered intravenous vitamin C and garlic oil, along with oxygenated water, sodium bicarbonate and ozone therapy, which an expert witness said were not supported by any clinical evidence as cancer treatments. —Angelique Brenes, PEOPLE, 1 May 2026

Word History

First Known Use

1885, in the meaning defined above

Kids Definition

sodium bicarbonate

noun

: a white weakly alkaline salt used especially in baking powders and fire extinguishers and in medicine as an antacid

called also baking soda, bicarbonate of soda

Medical Definition

sodium bicarbonate

noun

: a white crystalline weakly alkaline salt NaHCO₃ used in baking powders and in medicine especially as an antacid

called also baking soda, bicarb, bicarbonate of soda, sodium acid carbonate