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
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.
ĭn′tər-fîr′ŏn′
Received-Pronunciation:/ˌɪn.təˈfɪːˌɒn/
Southern-England:Recorded audio is listed in the source snapshot.
Canada, General-American:/ˌɪn.təɹˈfɪɹˌɑn/
Canada:/ˌɪn.təɹˈfɪɹˌɒn/
Australian:/ˌɪn.təˈfɪəˌɔn/
New-Zealand:/ˌən.tɐˈfiə̯ˌɔn/
Scotland:/ˌɪn.təɹˈfiɹˌɔn/
India:/ˌin.ʈɜrˈfiːɾˌɒn/
rhymes with -ɪːɒn
CMU ARPABET:IH2 N T ER0 F EH1 R AA0 N
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
CMU ARPABET 2:IH2 N T ER0 F IH1 R AA0 N
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
Any of a group of glycoproteins, produced by the immune system, that prevent viral replication in infected cells.
Definition source: English Wiktionary via Wiktextract