UNFRIGHTFUL

\ʌnfɹˈa͡ɪtfə͡l], \ʌnfɹˈa‍ɪtfə‍l], \ʌ_n_f_ɹ_ˈaɪ_t_f_əl]\
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1908 - Chambers's Twentieth Century Dictionary of the English Language
By Thomas Davidson

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Tetrabromsulphthalein

  • A phenolphthalein that is used as diagnostic aid in heptatic function determination.
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