Standard Lemma guide

immunodeficient

adj · 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

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.

  • rhymes with -ɪʃənt

1

adj

Meaning 1

exhibiting immunodeficiency

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adjective

Meaning 2

incapable of developing an immune response following exposure to an antigen

Definition source: Princeton WordNet 3.0

Examples

  • immunodeficient rodents

Meaning relationships

Synonyms: none provided

Antonyms: immunocompetent

History

Etymology

Etymology tree Proto-Indo-European *mey- Proto-Indo-European *moy-nósder. Proto-Italic *moinos Latin mūnus Proto-Indo-European *né Proto-Indo-European *n̥- Proto-Italic *n̥- Latin in- Proto-Indo-European *-ih2der.? Proto-Italic *-is Latin -is Latin in- -is Latin immūnisder. Middle French immunbor. Middle English English immune Ancient Greek -ο- (-o-)der. Latin -o-bor. English -o- English immuno- English deficient English immunodeficient From immuno- + deficient.