Standard Lemma guide

deuteranopia

noun · 2 senses · updated from the 2026-07-25 local source snapshot

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

Pronunciation

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No pronunciation record was provided for this word.

1

noun

Meaning 1

A form of color blindness in which the retina is deficient in or lacks cone cells containing opsins that respond to the color green, resulting in an inability to distinguish red from green.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

dichromacy characterized by a lowered sensitivity to green light resulting in an inability to distinguish green and purplish-red

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: Daltonism, green-blindness

Antonyms: none provided

Broader terms: red-green dichromacy, red-green color blindness, red-green colour blindness

History

Etymology

From deutero- (“second (color)”) + an- (“without”) + -opia (“vision”).

Across languages

Translations

7 source translations are retained for this English entry.

  • Chinese Mandarin: 绿色盲 — a form of color blindness
  • Chinese Mandarin: 乙型色盲 — a form of color blindness
  • Chinese Mandarin: 第二色盲 — a form of color blindness
  • Finnish: deuteranopia — a form of color blindness
  • Finnish: vihersokeus — a form of color blindness
  • Indonesian: deuteranopia — a form of color blindness
  • Portuguese: deuteranopia — a form of color blindness