5 syllables: Co, per, ni, ci, um. Stress on ni.
koh-pur-NIS-ee-uhm
/koʊpɚˈnɪsiəm/
Copernicium is pronounced koh-pur-NIS-ee-uhm (/koʊpɚˈnɪsiəm/). It has five syllables (Co-per-ni-ci-um), with the stress on "ni". Copernicium is a synthetic, highly radioactive chemical element with atomic number 112. It is named in honor of the astronomer Nicolaus Copernicus. The term is used primarily in advanced chemistry and physics contexts to discuss superheavy elements and their properties, synthesis, and the status of research in relativistic quantum chemistry.
nounCopernicium is a synthetic, highly radioactive chemical element with atomic number 112. It is named in honor of the astronomer Nicolaus Copernicus. The term is used primarily in advanced chemistry and physics contexts to discuss superheavy elements and their properties, synthesis, and the status of research in relativistic quantum chemistry.
Tip: practice with slow deli-broken syllables: /kə/ - /ˈpɜːr/ - /nɪ/ - /si/ - /əm/ and gradually speed up.
How to Pronounce Copernicium
"Researchers synthesized copernicium in small quantities for the first time."
"The properties of copernicium remain largely theoretical due to its short half-life."
"Copernicium is discussed in periodic-table sections about group 12 and the actinides."
Copernicium is pronounced koh-PER-ni-see-əm in US/UK pronunciation, with the stress on the second syllable. The initial /k/ is hard, followed by a reduced /ə/ in the first syllable, then the stressed /ɜːr/ or /ɜːr/ sound, then /nɪ/ and a final schwa /si.əm/. IPA: /kəˈpɜːr.nɪ.si.əm/. In careful speech, articulate each syllable: k-ə-PER-nə-SEE-əm, ensuring the ending /-iəm/ is not reduced to a mere /-iːm/.
Common errors include misplacing the stress on the first syllable (co-PER-ni-ci-um) and running the /ɜːr/ as a flat /ɜː/ without the rhotic quality, or flattening the ending to /-siːəm/ instead of /-si.əm/. To correct: place primary stress on the second syllable, ensure /ɜːr/ has a short rhotic r with slight curling of the tongue, and finish with a soft /si.əm/ where the /ə/ before m remains light rather than omitted.
US tends to clear /əˈpɜːr.nɪ.si.əm/ with rhotic /r/ and a slightly sharper /ɜːr/. UK often maintains a longer /ˈpɜː/ with non-rhoticity affecting preceding vowels in connected speech, though scientific terms remain rhotic in careful speech. Australian pronunciation mirrors UK with a broad /ɜː/ and often a more rounded vowel quality and a weaker final syllable, so /kəˈpɜː.nɪ.si.əm/. Regardless, the second syllable remains the primary stress in all varieties.
It blends rare/er sounds, a multi-syllabic sequence, and a non-intuitive II-phoneme chain (/pɜːr.nɪ.si.əm/). The challenge lies in maintaining primary stress on the second syllable while executing the unstressed /ə/ and /ɪ/ vowels accurately and keeping the final /-si.əm/ clear and not swallowed. Practice with slow, deliberate syllable-by-syllable breakdown to train muscle memory for the exact sequence.
Copernicium features a consonant cluster after the initial syllable and a final syllable with a reduced vowel and vowel-consonant transition /si.əm/. The unique element is the long, rounded /ɜːr/ vowel in the stressed second syllable, which must carry a subtle r-color and backward tongue retraction. Emphasize the -ni- before the final -ci-um to avoid slurring the middle sounds.
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IPA references: US /kəˈpɜːr.nɪ.si.əm/, UK /kəˈpɜː.nɪ.si.əm/, AU /kəˈpɜːnɪ.si.əm/.
Copernicium derives from the surname of the Renaissance astronomer Nicolaus Copernicus, combined with the Latin-derived chemical element naming tradition using the suffix -ium. The element was temporarily called ununbium (symbol Uub) following the IUPAC temporary naming system for newly discovered elements (un- prefixes reflecting digits: un-un-bin-ium). The 1990s–2000s Bartol researchers and others announced synthesis and isolation attempts for element 112, with confirmation in the 1990s–2000s leading to the official naming as Copernicium (Cn). The name honors Copernicus’s heliocentric theory, aligning with a tradition of naming new elements after scientists or places. First reported synthesis occurred in 1996 by Gesellschaft für Schwerionenforschung (GSI) in Darmstadt, with subsequent experiments validating short half-lives and decay chains. Usage in literature grew as the element moved from theoretical to experimental status, though practical handling remains confined to specialized facilities. The etymology hence links a modern discovery with historical scientific legacy, illustrating the ongoing evolution of chemical nomenclature as discoveries expand the periodic table.
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Words that rhyme with "Copernicium"
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