4 syllables: nu, cle, o, some. Stress on nu.
NOO-klee-oh-suhm
/ˈnuːkliˌoʊsəm/
nucleosome is pronounced NOO-klee-oh-suhm (/ˈnuːkliˌoʊsəm/). It has four syllables (nu-cle-o-some), with the stress on "nu". A nucleosome is the fundamental unit of chromatin, consisting of a segment of DNA wrapped around a core of histone proteins. It organizes genome packaging in the cell nucleus and regulates access to genetic information. In molecular biology, nucleosomes influence transcription, replication, and repair processes by controlling DNA accessibility and compaction.
A nucleosome is the fundamental unit of chromatin, consisting of a segment of DNA wrapped around a core of histone proteins. It organizes genome packaging in the cell nucleus and regulates access to genetic information. In molecular biology, nucleosomes influence transcription, replication, and repair processes by controlling DNA accessibility and compaction.
"The nucleosome arrangement along the DNA strand affects how genes are expressed."
"Scientists mapped nucleosome positions to understand chromatin structure in different cell types."
"During mitosis, nucleosome remodeling is essential for efficient chromosome condensation."
Pronounce as nyoo-KLOO-sohm (US) or nyoo-KLOO-sohm. The primary stress lands on the second syllable: nu-CLE-o-some. IPA US: /ˈnjuː.kloʊ.soʊm/; UK: /njuˈkluː.səʊm/; AU often /ˈnjuː.kjʊ.ləˌsoʊm/. The first syllable sounds like “new” but with a 'ny' onset; the middle is a clear “kloo” or “klu” blend; final “some” rhymes with “home.”
Common errors: 1) Stress on the first syllable (nu-CLE-o-some) rather than the second. 2) Flattening the middle to /njuːˈkluːsoʊm/ without the reduced second vowel; keep /ə/ in the third syllable in some accents. 3) Pronouncing as two separate words or misplacing the 'ls' cluster. Correct by stressing the -CLE- syllable, use a short, unstressed middle vowel, and avoid elongating the final 'm'.
US: /ˈnjuː.kloʊ.soʊm/ with rhotacized 'r' none; UK: /njuːˈkluː.səʊm/ with a schwa in the second-to-last syllable; AU: /ˈnjuː.kjuː.ləˌsom/ or /ˈnjuː.kloʊˌsoʊm/, often a closer 'u' in the second syllable and variable meter. Differences mainly involve vowel quality and the presence/absence of rhoticity in rapid speech. Overall, the nucleus remains the same, but the vowel in the penultimate syllable shifts.
The challenge lies in the 4-syllable sequence with a stress shift and multiple rounded front vowels: the /njuː/ onset, the /kloʊ/ vs /kluː/ mid, and the /soʊm/ ending. Mouth positions vary: rounded lips for /uː/ and /oʊ/; subtle vowel reduction in the third syllable. Practicing the exact sequence and tempo helps stabilize it in memory.
A unique aspect is the two-consonant cluster /kl/ after the initial /n/ and the secondary schwa presence in some accents: /ˈnjuː.kloʊ.soʊm/ vs /njuːˈkluː.səʊm/. The stress falls on the second syllable in many terms of biology, so focus on that beat and ensure the middle syllable doesn’t become a separate, strong vowel. IPA awareness is key for accuracy.
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US/UK/AU vary mainly in vowel quality and rhoticity. In US English, keep a clear /ə/ or reduced vowel in the third syllable and a non-rhotic final; in UK, more precise /əʊ/ for the final, and in AU, slightly fused vowels and a more clipped final consonant. IPA references: US /ˈnjuː.kloʊ.soʊm/, UK /njuˈkluː.səʊm/, AU /ˈnjuː.kjuː.ləˌsom/ (approx.). For all, ensure you maintain the /k/ onset and the /s/ before the final /m/.
The term nucleosome combines neo- (new) and Greek chroma/khroma (color), reflecting the early observation that DNA-bound particles stained distinctly in chromatin preparations. The word likely emerged in the 1970s as electron microscopy and biochemical methods revealed subunits of chromatin. The root nucle- derives from Latin nucleus, while -osome is a suffix used in biology to denote a body or unit, used broadly in eukaryotic cell structures. The concept evolved from the chromatin fiber model, where DNA winds around histone cores forming repeating units. First usages appear in foundational papers on chromatin organization and histone-DNA interactions, marking a shift from viewing DNA as a naked molecule to recognizing organized, modular chromatin units that regulate gene expression.
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Words that rhyme with "nucleosome"
-me) sounds
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