retinol

play
noun ret·i·nol \ ˈre-tə-ˌnȯl , -ˌnōl \

Definition of retinol

:the chief and typical vitamin A C20H29OH that is a highly unsaturated alicyclic alcohol used in various forms in medicine and nutrition

Recent Examples of retinol from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'retinol.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of retinol

retin- + 1-ol; from its being the source of retinal


Medical Dictionary

retinol

play
noun ret·i·nol \ ˈret-ᵊn-ˌȯl , -ˌōl \

medical Definition of retinol


Learn More about retinol


Seen and Heard

What made you want to look up retinol? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

of yeast or being unsettled or frivolous

Get Word of the Day daily email!

Test Your Vocabulary

Merriam-Webster's New Words Quiz—Fall 2017 Edition!

  • young-plant-shoots
  • Which of the following is a new sense of the word bunny?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!