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noun, Chemistry, Physics.
a superheavy, synthetic radioactive element with a very short half-life. Symbol: Rg; atomic number: 111.


Read Also:

  • Roentgenize

    verb (used with object), roentgenized, roentgenizing. (formerly) 1. to subject to the action of x-rays. verb 1. (transitive) to bombard with X-rays

  • Roentgeno-

    1. a combining form of roentgen: roentgenometer. combining form 1. indicating X-rays: roentgenogram

  • Roentgenogram

    [rent-guh-nuh-gram, -juh-, ruhnt-] /ˈrɛnt gə nəˌgræm, -dʒə-, ˈrʌnt-/ noun 1. a photograph made with x-rays. roentgenogram /ˈrɒntɡənəˌɡræm; -tjə-; ˈrɛnt-/ noun 1. (mainly US) an X-ray roentgenogram roent·gen·o·gram (rěnt’gə-nə-grām’, -jə-, rŭnt’-) n. A photograph made with x-rays. Also called roentgenograph.

  • Roentgenograph

    [rent-guh-nuh-graf, -grahf, -juh-, ruhnt-] /ˈrɛnt gə nəˌgræf, -ˌgrɑf, -dʒə-, ˈrʌnt-/ noun, (no longer current) 1. roentgenogram.

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