dehydrocholesterol

noun
de·hy·dro·cholesterol | \ dē¦hīdrō+ \

Definition of dehydrocholesterol 

: a crystalline steroid alcohol C27H43OH that occurs chiefly in higher animals and humans (as in the skin), that is made synthetically from cholesterol, and that yields vitamin D3 on irradiation with ultraviolet light

called also 7-dehydrocholesterol

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

History and Etymology for dehydrocholesterol

dehydr- + cholesterol

Keep scrolling for more

Learn More about dehydrocholesterol

Share dehydrocholesterol

Statistics for dehydrocholesterol

Look-up Popularity

Comments on dehydrocholesterol

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

WORD OF THE DAY

a magnificent or impressive array

Get Word of the Day daily email!

Test Your Vocabulary

Musical Words Quiz

  • gramophone
  • Which word describes a musical performance marked by the absence of instrumental accompaniment?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
SCRABBLE® Sprint

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!