单词	dual-energy X-ray absorptiometry
释义	dual-energy X-ray absorptiometry noun du·​al-en·​er·​gy X-ray absorptiometry ˈdü(-ə)l-ˈe-nər-jē-   also  ˈdyü-əl- variants or dual energy X-ray absorptiometry : absorptiometry in which the density or mass of a material (such as bone) is measured by comparing the material's absorption of X-rays of two different energies and which is used especially for determining the mineral content of bone —abbreviation DEXA, DXA Word History First Known Use 1988, in the meaning defined above Medical Definition dual-energy X-ray absorptiometry noun du·​al-energy X-ray absorptiometry ˈd(y)ü-əl- : absorptiometry in which the density or mass of a material (such as bone or fat) is measured by comparing the material's absorption of X-rays of two different energies and which is used especially for determining the mineral content and density of bone A medical exam ascertained bone density by using dual-energy X- ray absorptiometry (DXA), a standard method of assessing the extent of osteoporosis. Mari N. Jensen, Science News —abbreviation DEXA, DXA
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