bicarbonate: meaning, definition, pronunciation and examples
C1Technical/Scientific; Common in Everyday contexts when referring to baking soda.
Quick answer
What does “bicarbonate” mean?
A chemical compound containing the HCO₃⁻ ion.
Audio
Pronunciation
Definition
Meaning and Definition
A chemical compound containing the HCO₃⁻ ion; commonly sodium bicarbonate (baking soda), used as a leavening agent and antacid.
Any salt containing the bicarbonate anion; used in chemistry, cooking, medicine, and cleaning. In informal contexts, the term often refers specifically to sodium bicarbonate.
Dialectal Variation
British vs American Usage
Differences
UK English more commonly uses the full phrase 'bicarbonate of soda' in domestic contexts. US English favours 'baking soda'. The chemical term 'bicarbonate' is identical.
Connotations
In both varieties, the domestic term is strongly associated with home baking, cleaning, and simple remedies.
Frequency
'Baking soda' is significantly more frequent than 'bicarbonate of soda' in US English. In UK English, both 'bicarbonate of soda' and the shortened 'bicarb' (informal) are common.
Grammar
How to Use “bicarbonate” in a Sentence
Bicarbonate of [noun: substance]Sodium/potassium bicarbonateBicarbonate is used for [gerund: purpose]Vocabulary
Collocations
Examples
Examples of “bicarbonate” in a Sentence
adjective
British English
- The bicarbonate solution was tested.
American English
- We need a bicarbonate rinse.
Usage
Meaning in Context
Business
Rare, except in specific industries (chemical manufacturing, food production).
Academic
Common in chemistry, biochemistry, medical, and environmental science texts.
Everyday
Common in domestic contexts for baking and cleaning.
Technical
Core term in chemistry and physiology (e.g., blood bicarbonate levels).
Vocabulary
Synonyms of “bicarbonate”
Strong
Neutral
Weak
Vocabulary
Antonyms of “bicarbonate”
Watch out
Common Mistakes When Using “bicarbonate”
- Misspelling as 'bicarbinate'. Confusing 'bicarbonate' (HCO₃⁻) with 'carbonate' (CO₃²⁻). Using it as a countable noun incorrectly (e.g., 'a bicarbonate' – usually uncountable).
FAQ
Frequently Asked Questions
No. Baking powder contains bicarbonate of soda plus an acidic agent (like cream of tartar). Bicarbonate of soda needs an external acid (like lemon juice or yoghurt) in a recipe to work.
Yes, sodium bicarbonate is a mild abrasive and deodoriser, commonly used to clean surfaces, sinks, and freshen carpets.
Sodium bicarbonate is used as an antacid for indigestion and heartburn, and medically to treat certain cases of acidosis.
Historically, the prefix 'bi-' in salts indicated the presence of hydrogen. So 'bicarbonate' means a carbonate with added hydrogen (hydrogen carbonate).
A chemical compound containing the HCO₃⁻ ion.
Bicarbonate is usually technical/scientific; common in everyday contexts when referring to baking soda. in register.
Bicarbonate: in British English it is pronounced /ˌbaɪˈkɑː.bən.ət/, and in American English it is pronounced /ˌbaɪˈkɑːr.bən.ət/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “[No common idioms. The word is literal.]”
Learning
Memory Aids
Mnemonic
Think: BI-CARBON-ATE → It has TWO (BI) CARBON atoms in its core formula HCO₃ (which contains one carbon, but 'bi-' historically indicated the presence of hydrogen). Associate with BAKING, as in BI-CARBonate = BAKing soda.
Conceptual Metaphor
NEUTRALISING AGENT (It neutralises acids, both in cakes and in the stomach).
Practice
Quiz
In a domestic UK context, what are you most likely to buy if a recipe asks for 'bicarb'?