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X-inactivation
x out
X-radiation
X-rated
X-ray
X-ray astronomy
X-ray crystallography
X-ray diffraction
X-ray fluorescence
X-ray spectrum
X-ray star
X-ray therapy
X-ray tube
X12
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xanth-
xanthan gum
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X-ray fluorescence
X-ray fluo·res·cence


noun 
Definition:
 
emission of X-rays from irradiated sample: the emission of characteristic X-rays from a sample that has been bombarded by high-energy X-rays or gamma rays
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