2 syllables: en, zyme. Stress on en.
/ˈɛnzaɪm/
Say it backEnzyme is a biological catalyst, typically a protein, that speeds up chemical reactions within living organisms. Most enzymes are highly specific for their substrates, operating under particular conditions of pH and temperature. They enable essential processes such as digestion, metabolism, and DNA replication by lowering activation energy for reactions.
"Researchers studied the enzyme's activity under varying temperatures to determine optimal conditions."
"The digestive enzyme amylase breaks down starch in the mouth and small intestine."
"Some people have deficiencies in certain enzymes, which can lead to metabolic disorders."
Pronounce as EN-zym, with primary stress on the first syllable. IPA: US/UK/AU /ˈɛnˌzaɪm/. Start with the /ɛ/ as in 'bed', then /n/ to /z/ transitioning to an elongated /aɪ/ diphthong in 'zyme', and end with /m/. Think of it as two syllables: EN-zyme, where the second syllable contains the /zaɪm/ cluster. You can listen to: pronunciation sources linked in pronunciations resources.
Common errors: treating it as two even syllables with a hard z sound after the first vowel, producing EN-zee-m instead of EN-zym. Another mistake is mispronouncing /zaɪm/ as /zeɪm/ or /zɛm/; ensure the diphthong /aɪ/ is clear. Also avoid a heavy 'e' before /n/—keep the /n/ light and connect smoothly into /zaɪm/. Practice by isolating /ˈɛn/ and then blending into /zaɪm/.
In US/UK/AU, pronunciation centers on /ˈɛnˌzaɪm/. The initial /ˈɛn/ is similar across, with slight vowel length differences; rhoticity does not affect this word. UK speakers may show slightly crisper alveolar /z/ and less flossing. Australian English often has a slightly more centralized vowel quality in /æ/ vs /ɛ/; overall difference is subtle. In accelerated speech, the /ən/ may coalesce slightly. All share the /zaɪm/ ending; practice with minimal pairs to feel the diphthong.
Because it blends a short, lax first syllable /ˈɛn/ with a tight, high-front diphthong /zaɪm/ and a final nasal /m/, which can tempt English learners to over- or under-pronounce the /z/ or misplace the tongue for /aɪ/. The cluster /z/ transitioning to /aɪ/ requires smooth lip and tongue movement; learners often insert an extra vowel or separate the syllables too much. Focus on keeping a tight, quick transition between /ən/ and /zaɪm/.
There are no silent letters in the standard pronunciation of 'enzyme'; stress is primarily on the first syllable: EN-zyme. Some learners might stress the second syllable, producing ENZ-ym, which sounds off to native ears. The key is a clean /ˈɛn/ onset and a strong /zaɪm/ coda; ensure the /z/ is voiced and not devoiced, and keep the /m/ quiet after the diphthong.
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The word enzyme derives from Greek enzym, meaning 'in leaven' or 'in yeast' originally from 'enzyme' meaning 'in yeast' and later expanded to denote a specific biological catalyst. The term was coined in the late 19th century by German physiologist Eduard Buchner and others to describe biological molecules that accelerate chemical reactions inside living cells. Before the adoption of enzyme, researchers used general terms like ferment. The modern concept of enzymes as highly specific proteins emerged in the early 20th century with advances in biochemistry, including the identification of enzyme active sites and the understanding that many enzymes require cofactors. The discovery of ribozymes in the 1980s broadened the definition to RNA catalysts as well. First known use in English literature dates to the 1870s in scientific writings, with popularization occurring through textbooks and journals in the 20th century as molecular biology matured.
💡 Etymology tip: Understanding word origins can help you remember pronunciation patterns and recognize related words in the same language family.
Help others use "enzyme" correctly by contributing grammar tips, common mistakes, and context guidance.
💡 These words have similar meanings to "enzyme" and can often be used interchangeably.
🔄 These words have opposite meanings to "enzyme" and show contrast in usage.
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Words that rhyme with "enzyme"
-eam sounds
Practice with these rhyming pairs to improve your pronunciation consistency:
🎵 Rhyme tip: Practicing with rhyming words helps you master similar sound patterns and improves your overall pronunciation accuracy.
