noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Vitamin A uncountable
2. 2
   any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes wordnet

Synonyms

All synonyms

aantiophthalmic factorascorbic acidniacinretinolriboflavin

Etymology

From a- (“anti”); ξηρός (xērós, “dry”); ὀφθαλμός (ophthalmós, “eye”); -ol which reflects its deficiency causing eye dryness.

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