Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

dietary supplement

noun

Definition of dietary supplement

  1. :  a product taken orally that contains one or more ingredients (as vitamins or amino acids) that are intended to supplement one's diet and are not considered food



1967

First Known Use of dietary supplement

1967


Medical Dictionary

dietary supplement

noun

Medical Definition of dietary supplement

  1. :  a product taken orally that contains one or more ingredients (such as vitamins, minerals, herbs, or amino acids) that are intended to supplement one's diet and are not considered food <The study is looking at whether taking daily dietary supplements of vitamin D3 or omega-3 fatty acids reduces the risk for developing cancer, heart disease and stroke.—Mary Brophy Marcus, USA Today, 4 Oct. 2011> <A hormone produced by the pineal gland in the brain, melatonin also occurs naturally in some foods. It therefore may be sold as a dietary supplement in the United States under the Dietary Supplement Health and Education Act of 1994, without premarket approval from the FDA.—Lynne Lamberg, The Journal of the American Medical Association, 2 Oct. 1996> <… batches of a dietary supplement L-tryptophan that have been implicated in a mysterious disease were produced by a genetically engineered organism.—Leslie Roberts, Science, 31 Aug. 1990>




Learn More about dietary supplement


Seen and Heard

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

WORD OF THE DAY

to dishevel or rumple

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alt-5746713d76276

Which of these is a synonym of nonplus?

reduce soothe perplex disapprove
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ