noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   vitamin deficiency: insufficiency of one or more essential vitamins in the body. Specific forms are labeled with the vitamin identifier: hypovitaminosis A, hypovitaminosis D, and so on, although those forms are more often called vitamin A deficiency, vitamin D deficiency, and so on. countable, uncountable
2. 2
   any of several diseases caused by deficiency of one or more vitamins wordnet

Synonyms

All synonyms

avitaminosisavitaminosis

Antonyms

All antonyms

hypervitaminosis

Etymology

From hypo- + vitamin + -osis.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.