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radiomicrometer

[rey-dee-oh-mahy-krom-i-ter] /ˌreɪ di oʊ maɪˈkrɒm ɪ tər/
noun
1.
an instrument for measuring small amounts of radiant energy, consisting of a sensitive thermocouple connected to a galvanometer.
Origin
1885-1890
1885-90; radio- + micrometer
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for radio micrometer

radiomicrometer

/ˌreɪdɪəʊmaɪˈkrɒmɪtə/
noun
1.
an instrument for detecting and measuring small amounts of radiation, usually by a sensitive thermocouple
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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