4 syllables: In, ter, fer, on. Stress on fer.
in-tur-FER-ahn
/ˌɪntɚˈfɛɹɑn/
Interferon is pronounced in-tur-FER-ahn (/ˌɪntɚˈfɛɹɑn/). It has four syllables (In-ter-fer-on), with the stress on "fer". Interferon is a type of signaling protein produced by host cells in response to pathogens, especially viruses, to trigger immune defense mechanisms. It plays a crucial role in coordinating antiviral activities and modulating the immune response. The term combines ‘interacting’ and ‘feron’ from the Greek neos, indicating a circulating, interfering agent.
nounInterferon is a type of signaling protein produced by host cells in response to pathogens, especially viruses, to trigger immune defense mechanisms. It plays a crucial role in coordinating antiviral activities and modulating the immune response. The term combines ‘interacting’ and ‘feron’ from the Greek neos, indicating a circulating, interfering agent.
"Doctors often administer interferon as part of cancer or viral infection therapies."
"Interferon production is one of the body’s early defensive signals when a virus is detected."
"Researchers study interferon pathways to develop targeted antiviral treatments."
Pronounce as in-ter-FER-on (US: ˌɪn tərˈfɪərˌɒn or ˌɪn tərˈfɜːrɒn; UK: ˌɪn təˈfɪə.rɒn). The primary stress is on the third syllable in many variants: in-ter-FER-on. Start with a light initial /ɪ/ or /ɪn/, then /tər/ and a strong /ˈfɪər/ or /ˈfɜːr/ depending on accent, ending with /ɒn/ or /ən/. Visualize ‘inter’ + ‘feron’ with the heavier emphasis on 'fer'. For reference, listen to medical pronunciation spots on Pronounce or YouGlish using “interferon.”
Common errors: (1) Shifting stress to the first syllable (in-TER-e-fon) or the second (in-ter-FER-on) inconsistently. (2) Mispronouncing the 'fer' as a hard ‘fur’ in some US circles (pronounce /ˈfɪər/). (3) Dropping the final /n/ or turning it into a syllabic /n/. Correction: keep final /n/ clearly, and maintain the /ər/ or /ɜːr/ vowel before it. Practice with phrases like ‘interferon therapy’ to fix rhythm and final consonant. Align with IPA /ˌɪn tərˈfɪərˌɒn/ (US) or /ˌɪn təˈfɪə.rɒn/ (UK).
US tends to reduce unstressed vowels and may have a slightly rhotic /r/ in the middle syllable: in-tər-FEER-on. UK often features non-rhoticity in the /r/ and a more rounded /ɒ/ at the end and a softer /ə/ in the second syllable: in-tə-FEER-ən. Australian tends toward a clearer /ɜː/ in the r-controlled vowel and a crisp final /n/, with the middle syllable closer to /fiːr/ or /fɪə/ depending on speaker. Use IPA cues and listen to medical lectures for precise patterns.
It blends a multi-syllabic structure with stress on a non-initial syllable and a tricky diphthong in the central syllable (/ˈfɪər/ or /ˈfɜːr/). The sequence /tərˈfer/ can cause consonant clustering challenges and a mid vowel shift, while the final /n/ can be devoiced. Additionally, the term is not common in everyday conversation, so familiarity is lower; this raises likelihood of misplacing emphasis or softening the 'er' vowel. Practicing with slow drills and IPA-guided listening helps anchor accuracy.
The central stress often falls on the 'fer' syllable, yielding a 'fer' keynote within a longer word, which is common in biomedical terms (e.g., interferon, interferon-stimulated genes). The 'er' syllable can be pronounced with a schwa-like tense vowel in fast speech (in-tuh-FER-on) or with a clear /ɜːr/ in careful speech. Paying attention to the light, reduced second syllable in rapid speech and the strong 'fer' in slower, enunciated speech makes the word sound natural across dialects.
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Interferon derives from the Latin prefix inter- meaning 'between' or 'among' and the root fer- from ferre, ‘to bear, to carry,’ with the suffix -on indicating a particle or protein. The term reflects its function as a signaling molecule that acts between cells, interfering with viral replication and coordinating neighboring cellular responses. The earliest uses emerged mid-20th century as scientists described interferons as soluble factors that interfere with viral replication. The concept matured in the 1950s–1980s with discoveries of multiple interferon types (alpha, beta, gamma) and their distinct roles in innate immunity. In modern immunology, interferons are recognized as essential cytokines with pleiotropic effects, including antiviral, antiproliferative, and immunomodulatory actions. The word was coined to capture their role in “interfering” with viral processes while signaling other cells, rather than as a structural component of a pathogen. First known published usage appears in technical literature circa 1957–1960, aligned with early discoveries by Isaacs, Lindenmann, and colleagues who described interferon as a molecule that “interferes” with viral replication in incubated cells. Over decades, the term expanded to cover a family of related proteins produced by various cell types in response to infection or immune stimuli.
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Words that rhyme with "Interferon"
-fer sounds
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