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[koh-per-nis-ee-uh m] /ˌkoʊ pərˈnɪs i əm/

noun, Chemistry, Physics.
a superheavy, synthetic, radioactive element with a very short half-life. Symbol: Cn; atomic number: 112.


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  • Copesetic

    [koh-puh-set-ik, -see-tik] /ˌkoʊ pəˈsɛt ɪk, -ˈsi tɪk/ adjective 1. . [koh-puh-set-ik, -see-tik] /ˌkoʊ pəˈsɛt ɪk, -ˈsi tɪk/ adjective, Slang. 1. fine; completely satisfactory; OK. /ˌkəʊpəˈsɛtɪk/ adjective 1. (US & Canadian, slang) very good; excellent; completely satisfactory adj. see copacetic. adj. 1919, but it may have origins in 19c. U.S. Southern black speech. Origin unknown, suspects […]

  • Copestone

    [kohp-stohn] /ˈkoʊpˌstoʊn/ noun 1. the top of a building or other structure. 2. a used for or in . 3. the crown or completion; finishing touch. /ˈkəʊpˌstəʊn/ noun 1. Also called coping stone. a stone used to form a coping 2. Also called capstone. the stone at the top of a building, wall, etc

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