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Definitions

deficiency

[dih-fish-uhn-see] / dɪˈfɪʃ ən si /


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

But B12 deficiency should be considered before folate is prescribed on its own, because folate can improve some blood signs of B12 deficiency while nerve damage continues.

From Science Daily • Jun. 6, 2026

Without enough B12, things can go wrong, sometimes seriously, especially if deficiency is not recognized and treated.

From Science Daily • May 27, 2026

"Revisiting the definition of B12 deficiency to incorporate functional biomarkers could lead to earlier intervention and prevention of cognitive decline."

From Science Daily • May 22, 2026

B12 is clearly essential for the nervous system, and deficiency should not be ignored.

From Science Daily • May 22, 2026

It wouldn’t have mattered anyway. 5-alpha-reductase deficiency syndrome is a skillful counterfeiter.

From "Middlesex: A Novel" by Jeffrey Eugenides




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