vitamin G

noun

vitamin B₂ or riboflavin.

Meanings

nounvitamin G (uncountable)

alternative Vitamin G

  1. dateduncountablevitamin B₂ or riboflavin.
  2. informaluncountabletime spent in nature, in a garden or greenspace, as a health benefit

    There are dozens of ways to connect with nature, and you don’t even need to have your own garden to get your Vitamin G.

    2021 April 16, Olivia Heath, “The RHS shares 5 ways to get your dose of Vitamin G - and you don’t even need to have your own garden”, in House Beautiful
    1 more example

    2006 June 7, Peter P Groenewegen, Agnes E van den Berg, Sjerp de Vries3 and Robert A Verheij "Vitamin G: effects of green space on health, well-being, and social" BMC Public Health vol. 6 no. 149 →DOI The briefest summary of our program is in its title: Vitamin G, where G stands for the green space around us. Notions of beneficial effects of nearby green space have persisted throughout history.

  3. IrelandhumorousuncountableGuinness stout

    ...a pint of Guinness at the Cheltenham Festival costs a mind-boggling £7.50. That makes it one of the most expensive pints of "Vitamin G", as it's dubbed, in the world.

    2023 March 14, Anthony Chapman, “ALE STORM Cheltenham Festival punters forced to pay out staggering amount for pint of Guinness… one of most expensive in WORLD”, in The Sun, UK
    1 more example

    With Krissy Harris (former head bartender at Gramercy Tavern) overseeing the bar program, drinkers may be tempted to set Guinness aside for cocktails ... Of course, Vitamin G loyalists can still find the stuff on tap

    2011 December 11, “New York; Bars; The Wren”, in Time Out

Synonyms & antonyms

nouna B vitamin that prevents skin lesions and weight loss

Broader
B-complex vitaminB complexvitamin B complex

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

In the literal vitamin sense, G is the initial of Joseph Goldberger, involved in its discovery. In later figurative senses, G is the initial of the referent.

Full word history & related roots →
Cite this entry
APA

vitamin G. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/vitamin%20G

MLA

“vitamin G.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/vitamin%20G. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “vitamin G,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/vitamin%20G.

Source: vitamin G on Wiktionary, CC BY-SA 4.0.