Standard Lemma guide

immunoreactive

adj · 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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  • rhymes with -æktɪv

1

adj

Meaning 1

Of, pertaining to, or causing an immune reaction.

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

Any substance that causes an immune reaction.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

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 reactive English immunoreactive From immuno- + reactive.