Definitions

from The Century Dictionary.

  • noun A liquid diterpene, C20H32, which is found in copaiba and is also formed by the distillation of rosin. It is occasionally used as a solvent in pharmacy, and as an ointment or liniment.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Chem.) A hydrocarbon oil C32H16, obtained by the distillation of resin, -- used as a solvent, as an antiseptic, and in printer's ink.
  • noun One of the compounds which function as vitamin A. Called also vitamin A, vitamin A1 and vitamin A alcohol. See vitamin A1.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A fat-soluble carotenoid vitamin (vitamin A), present in fish oils and green vegetables, essential to normal vision and to bone development.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun an unsaturated alcohol that occurs in marine fish-liver oils and is synthesized biologically from carotene

Etymologies

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Examples

  • I think most of us just finished eating them for Thanksgiving and sweet potatoes have so much vitamin A the orange color as you can see is converted to beta-carotene that's converted to retinol, which is vitamin A in your body and so that helps fight, boost your immune system and fight off colds and flu.

    CNN Transcript Nov 28, 2009 2009

  • Vitamin A: Also known as retinol, vitamin A only occurs in animal foods, but fruit and vegetables contain carotenoids, which are converted to vitamin A by our bodies.

    Superfoods for Babies and Children Annabel Karmel 2006

  • Vitamin A: Also known as retinol, vitamin A only occurs in animal foods, but fruit and vegetables contain carotenoids, which are converted to vitamin A by our bodies.

    Superfoods for Babies and Children Annabel Karmel 2006

  • The immediate receptor of the photon is a derivative of vitamin A, termed retinol.

    THE HIDDEN FACE OF GOD GERALD L. SCHROEDER 2001

  • The immediate receptor of the photon is a derivative of vitamin A, termed retinol.

    THE HIDDEN FACE OF GOD GERALD L. SCHROEDER 2001

  • An enzyme encoded by RPE65 helps break down a derivative of vitamin A called retinol into a substance that photoreceptors need to detect light and send signals to the brain.

    The Full Feed from HuffingtonPost.com The Huffington Post News Editors 2012

  • Vitamin A - also known as retinol - plays a vital role in strengthening our immune system, protecting us against common infections such as flu and winter vomiting.

    unknown title 2009

  • Unlike "retinol," a compound found in many over-the-counter products, retinoic acid must be prescribed.

    Can Your Skin Be Saved? 2008

  • Non-polar molecules, such as retinol or fatty acids are poorly soluble in water.

    WN.com - Articles related to Scientists uncover mysterious workings of cholera bacteria 2010

  • Non-polar molecules, such as retinol or fatty acids are poorly soluble in water.

    WN.com - Articles related to Scientists uncover mysterious workings of cholera bacteria 2010

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