mes·o·tho·ri·um 
(mĕz′ə-thôrē-əm, mĕs′-)
(mĕz′ə-thôrē-əm, mĕs′-)n.
Either of two decay products of thorium, mesothorium I, an isotope of radium, or mesothorium II, an isotope of actinium.
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- high-spiritedly
- high-spiritedness
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- high-style
- hight
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- high-test
- high-ticket