noun
Meaning 1
Vitamin A
Definition source: English Wiktionary via Wiktextract
Usage: uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Standard Lemma guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
noun
Vitamin A
Definition source: English Wiktionary via Wiktextract
Usage: uncountable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: vitamin A, antiophthalmic factor, A
Antonyms: none provided
Broader terms: fat-soluble vitamin
Narrower terms: vitamin A1, retinol, vitamin A2, dehydroretinol
History
From a- (“anti”); ξηρός (xērós, “dry”); ὀφθαλμός (ophthalmós, “eye”); -ol which reflects its deficiency causing eye dryness.