barium mealnoun [ C or U ]
uk/ˌbeə.ri.əm ˈmiːl/us/ˌber.i.əm ˈmiːl/UK US barium swallow [ C or U ]a chemical, barium sulphate, that is swallowed by a person just before an X-ray is taken of their stomach and bowels, so that these organs can be seen clearly
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Medical examination
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- electrocardiogram
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- screening
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- specimen
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