Meanings
alternative abbreviation vit. D
- uncountablebiochemistryAny of a number of fat-soluble vitamins, required for normal bone development and preventing rickets, that can be manufactured in the skin on exposure to sunlight.
Synonyms: sunshine vitamin
- humorousslanguncountablevulgarA dick (“penis”), especially in a sexual context.
Synonyms: anaconda, baloney pony, bald-headed hermit, banana, bird, birdie, bobby, boonga
Synonyms & antonyms
nounAny of a number of fat-soluble vitamins, required for normal bone development and preventing rickets, that can be manufactured in the skin on exposure to sunlight.
nounA dick (“penis”), especially in a sexual context.
More synonyms by meaning
nouna fat-soluble vitamin that prevents rickets
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
From vitamin + D (“4th letter”). From being the fourth vitamin discovered. Coined in 1922 by Elmer McCollum, who discovered the vitamin.
Full word history & related roots →Translations
Chinese Mandarin 維生素D /维生素D
- 維生素D /维生素D (wéishēngsù D)any of a number of fat-soluble vitamins
Dutch vitamine D
- vitamine Dany of a number of fat-soluble vitamins
Esperanto vitamino D
- vitamino Dany of a number of fat-soluble vitamins
Finnish D-vitamiini
- D-vitamiiniany of a number of fat-soluble vitamins
German Vitamin D
- Vitamin Dany of a number of fat-soluble vitamins
Hungarian D-vitamin
- D-vitaminany of a number of fat-soluble vitamins
Japanese ビタミンD
- ビタミンD (bitamin D)any of a number of fat-soluble vitamins
Korean 비타민 D
- 비타민 D (bitamin D)any of a number of fat-soluble vitamins
Portuguese vitamina D
- vitamina Dany of a number of fat-soluble vitamins
Russian витами́н D
- витами́н D (vitamín D)any of a number of fat-soluble vitamins
Swahili vitamini D
- vitamini Dany of a number of fat-soluble vitamins
Swedish D-vitamin
- D-vitaminany of a number of fat-soluble vitamins
Cite this entry
vitamin D. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/vitamin%20D
“vitamin D.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/vitamin%20D. Accessed November 4, 2026.
WatkinsX Dictionary, s.v. “vitamin D,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/vitamin%20D.
Source: vitamin D on Wiktionary, CC BY-SA 4.0.