retinol
Definition
- Noun:
- A form of vitamin A: Retinol is a specific, preformed type of vitamin A that is found in animal products and is used by the body for vision, immune function, and skin health.
- An unsaturated alcohol: In chemical terms, retinol is classified as an unsaturated alcohol, which is a compound with a specific molecular structure containing a hydroxyl group (-OH) and carbon-carbon double bonds.
Usage Examples
- Noun:
- Retinol is essential for good vision, especially in low light.
- This skincare cream contains retinol to help reduce the appearance of wrinkles.
- The primary dietary sources of retinol are liver, fish oils, and dairy products.
Advanced Usage
- "Retinol activity equivalents (RAE)": A unit of measurement used to compare the vitamin A activity from different sources, such as preformed retinol and provitamin A carotenoids.
- Nutrition labels may list vitamin A content in retinol activity equivalents.
Variants and Related Words
- Retinal (noun): The aldehyde form of retinol, which is directly involved in the visual cycle in the eye.
- Retinoic acid (noun): An acid derived from retinol that plays a crucial role in gene expression and cell growth.
- Provitamin A (noun): Compounds like beta-carotene that the body can convert into retinol.
Synonyms
- Vitamin A1: Another name for the specific compound retinol.
- Preformed vitamin A: A term distinguishing retinol (found in animal sources) from provitamin A carotenoids (found in plant sources).
Related Compounds and Terms
- Beta-carotene (noun): A provitamin A carotenoid that the body converts into retinol.
- The body converts beta-carotene from carrots into retinol.
- Tretinoin (noun): A pharmaceutical drug that is a form of retinoic acid, often used in acne treatment.
Noun
-
an unsaturated alcohol that occurs in marine fish-liver oils and is synthesized biologically from carotene
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