stearate: meaning, definition, pronunciation and examples
C2/TechnicalTechnical/Scientific
Quick answer
What does “stearate” mean?
A salt or ester of stearic acid (a common saturated fatty acid).
Audio
Pronunciation
Definition
Meaning and Definition
A salt or ester of stearic acid (a common saturated fatty acid).
In industrial and cosmetic contexts, any compound containing the stearate anion (C₁₇H₃₅COO⁻), widely used as a lubricant, release agent, or emulsifier.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences; spelling and pronunciation are consistent. Usage frequency may vary slightly by industry standard.
Connotations
Neutral technical term in both varieties.
Frequency
Equally low-frequency in general English but standard in relevant technical fields.
Grammar
How to Use “stearate” in a Sentence
[Adj] stearatestearate of [metal][metal] stearateVocabulary
Collocations
Examples
Examples of “stearate” in a Sentence
adjective
British English
- The stearate coating prevented adhesion.
- A stearate-based lubricant was applied.
American English
- The stearate coating prevented sticking.
- A stearate-based lubricant was used.
Usage
Meaning in Context
Business
In procurement for pharmaceuticals or plastics: 'We need to source pharmaceutical-grade magnesium stearate.'
Academic
In a materials science paper: 'The polymer blend was stabilized with 0.5% zinc stearate.'
Everyday
Virtually never used in everyday conversation.
Technical
Standard term in chemistry, pharmacology, and industrial manufacturing specifications.
Vocabulary
Synonyms of “stearate”
Strong
Neutral
Weak
Vocabulary
Antonyms of “stearate”
Watch out
Common Mistakes When Using “stearate”
- Pronouncing it as /steɪˈræt/ or /ˈstiːreɪt/.
- Confusing 'stearate' (salt/ester) with 'stearic acid' (the parent acid).
- Using it as a countable noun in plural form without a quantifier (e.g., 'three stearates' is odd; better: 'three types of stearate').
FAQ
Frequently Asked Questions
No. Stearic acid is the free fatty acid (C₁₇H₃₅COOH). A stearate is a salt (e.g., sodium stearate) or an ester derived from it.
It acts as a lubricant in tablet and capsule manufacturing, ensuring powders flow smoothly and do not stick to equipment during compression.
Common stearates like magnesium and calcium stearate are generally recognized as safe (GRAS) by food and drug authorities in small, regulated quantities as excipients.
It can be either. Stearic acid is naturally found in animal and vegetable fats. Salts/esters (stearates) can be produced from natural sources or synthesized.
A salt or ester of stearic acid (a common saturated fatty acid).
Stearate is usually technical/scientific in register.
Stearate: in British English it is pronounced /ˈstɪəreɪt/, and in American English it is pronounced /ˈstɪəreɪt/, /ˈstireɪt/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think: STEArate = STEAr (as in tallow/fat) + -ATE (a common ending for salts/esters, like 'sulfate' or 'nitrate'). It's the 'ated' form of stearic acid.
Conceptual Metaphor
A stearate is like a 'handshake' between a metal (or alcohol) and stearic acid – a stable compound formed from two components.
Practice
Quiz
What is a primary industrial use of stearates?