vitamin D
noun
: any or all of several fat-soluble vitamins chemically related to steroids, essential for normal bone and tooth structure, and found especially in fish-liver oils, egg yolk, and milk or produced by activation (as by ultraviolet irradiation) of sterols: such as
a
or vitamin D2
: calciferol
b
or vitamin D3
: cholecalciferol
Examples of vitamin D in a Sentence
Recent Examples on the Web
To maintain healthy bones, establish a regular exercise routine that includes weight training, and incorporate foods rich in vitamin D and calcium into your diet.
—
Caroline C. Boyle, USA Today, 21 Apr. 2025
So, people who rely on specific nutrients like vitamin D for bone health or folic acid during pregnancy might want to use vitamins before their expiration date.
—Emmanuella Ogbonna, Health, 21 Apr. 2025
The primary source of vitamin D is exposure to the sun’s ultraviolet (UV) rays.
—Melissa Rudy, FOXNews.com, 19 Apr. 2025
Bonus: get outside — sunlight triggers natural vitamin D production.
—Allison Palmer, Miami Herald, 14 Apr. 2025
See All Example Sentences for vitamin D
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Caroline C. Boyle, USA Today, 21 Apr. 2025
So, people who rely on specific nutrients like vitamin D for bone health or folic acid during pregnancy might want to use vitamins before their expiration date.
—Emmanuella Ogbonna, Health, 21 Apr. 2025
The primary source of vitamin D is exposure to the sun’s ultraviolet (UV) rays.
—Melissa Rudy, FOXNews.com, 19 Apr. 2025
Bonus: get outside — sunlight triggers natural vitamin D production.
—Allison Palmer, Miami Herald, 14 Apr. 2025
See All Example Sentences for vitamin D
Cite this Entry
“Vitamin D.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/vitamin%20D. Accessed 25 Apr. 2025.
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