Definition of retinol in English:

retinol

noun

Biochemistry
  • [mass noun] A yellow compound found in green and yellow vegetables, egg yolk, and fish-liver oil. It is essential for growth and for vision in dim light.

    Also called vitamin A
    • ‘Retinoic acid is derived mainly by local synthesis through the enzymatic oxidation of retinol.’
    • ‘Most skin types can benefit from retinol, a derivative of vitamin A.’
    • ‘Multivitamins and breakfast cereals were two of the largest sources of retinol, though many brands get some of their vitamin A from beta-carotene.’
    • ‘Opt for products that contain skin-lightening ingredients like retinol, vitamin C and licorice.’
    • ‘Retinol can help skin cells turn over faster so you won't have a lackluster complexion in the A.M.’

Origin

1960s: from retina + -ol.

Pronunciation

retinol

/ˈrɛtɪnɒl/