sodium bisulfite

noun
variants: or less commonly sodium acid sulfite

Definition of sodium bisulfite 

: either of two salts usually obtained by passing sulfur dioxide through a solution of sodium carbonate:

a : an unstable crystalline salt NaHSO3 that is known especially in solution and forms sodium metabisulfite on dehydration; sodium hydrogen sulfite

b : sodium metabisulfite

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Learn More about sodium bisulfite

Share sodium bisulfite

Statistics for sodium bisulfite

Look-up Popularity

Comments on sodium bisulfite

What made you want to look up sodium bisulfite? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

required by fashion, etiquette, or custom

Get Word of the Day daily email!

Test Your Vocabulary

Great Scrabble Words—A Quiz

  • scrabble-tiles-that-read-scrabble-quiz
  • Which of the following Q-without-U words means the number five in cards or dice?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!