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heliometer (astronomical instrument for measuring the diameter of the sun) noun [UK: hˌelɪˈɒmɪtə] [US: hˌelɪˈɑːmɪɾɚ] | héliomètre◼◼◼nom {m} |
pyrheliometer [pyrheliometers] (measuring device) noun [UK: pˌɪrhɪlɪˈɒmɪtə] [US: pˌɪrhɪlɪˈɑːmɪɾɚ] | pyrhéliomètre◼◼◼nom {m} |