squalene: meaning, definition, pronunciation and examples
C1Technical / Scientific
Quick answer
What does “squalene” mean?
A naturally occurring triterpene hydrocarbon found in large quantities in shark liver oil and in smaller amounts in olive oil, human sebum, and other sources.
Audio
Pronunciation
Definition
Meaning and Definition
A naturally occurring triterpene hydrocarbon found in large quantities in shark liver oil and in smaller amounts in olive oil, human sebum, and other sources; a biochemical precursor in the synthesis of cholesterol and steroid hormones.
In cosmetics and supplements, squalene (often derived from plants as 'squalane' when hydrogenated) is valued as a moisturizer and antioxidant. In biochemistry, it is a key intermediate in the biosynthesis of sterols. It is also studied for potential vaccine adjuvant properties.
Dialectal Variation
British vs American Usage
Differences
No significant spelling or usage differences. The scientific term is identical in both variants.
Connotations
Primarily carries scientific/technical connotations in both regions. In consumer contexts (skincare), it is associated with high-end or 'clean beauty' products.
Frequency
Very low frequency in general discourse. Encountered almost exclusively in biochemistry, dermatology, cosmetic science, and nutritional supplement contexts.
Grammar
How to Use “squalene” in a Sentence
[The liver] synthesizes squalene from [farnesyl pyrophosphate].The formulation was enriched with [squalene].[Squalene] is converted to [lanosterol].Vocabulary
Collocations
Examples
Examples of “squalene” in a Sentence
adjective
British English
- The squalene pathway is essential.
- squalene-rich oil
American English
- squalene-based adjuvant
- squalene synthase activity
Usage
Meaning in Context
Business
Used in the cosmetics and supplement industry in marketing materials to denote a 'natural' moisturizing ingredient.
Academic
Central to discussions of steroid biosynthesis pathways in biochemistry textbooks and papers.
Everyday
Rare. May appear on skincare product ingredient lists or in articles about 'superfood' supplements.
Technical
Precise term in organic chemistry, lipidology, dermatology, and vaccine research (as an adjuvant).
Vocabulary
Synonyms of “squalene”
Strong
Neutral
Weak
Vocabulary
Antonyms of “squalene”
Watch out
Common Mistakes When Using “squalene”
- Misspelling as 'squaline' or 'squaleen'.
- Confusing 'squalene' (unsaturated) with 'squalane' (saturated, stable for cosmetics).
- Mispronouncing the second syllable as /lɪn/ instead of /liːn/.
FAQ
Frequently Asked Questions
Yes, squalene and its derivative squalane are generally considered safe, non-comedogenic, and highly effective emollients commonly used in skincare.
It is a crucial linear intermediate in the mevalonate pathway, from which all steroid molecules (like cholesterol, testosterone, and cortisol) are cyclized and elaborated.
Traditional squalene is sourced from sharks, raising ethical concerns. However, vegan squalene, derived from plant sources like olives, sugarcane, or amaranth seeds, is widely available, especially in its hydrogenated form (squalane).
Squalene is used in some vaccine adjuvants (e.g., MF59) to stimulate a stronger immune response by creating a depot effect and enhancing antigen presentation.
A naturally occurring triterpene hydrocarbon found in large quantities in shark liver oil and in smaller amounts in olive oil, human sebum, and other sources.
Squalene is usually technical / scientific in register.
Squalene: in British English it is pronounced /ˈskweɪliːn/, and in American English it is pronounced /ˈskweɪliːn/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think of a SQUAre-finned shark swimming in a CLEaN sea; sharks are a key source of SQUALENE, a clean, oily compound.
Conceptual Metaphor
A BUILDING BLOCK or SCAFFOLD (for constructing cholesterol and other steroids). A NATURAL LUBRICANT / MOISTURIZER (in skincare contexts).
Practice
Quiz
Squalane, commonly used in cosmetics, is best described as: