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actinic |
of or pertaining to the chemical property of ultraviolet radiation and x-rays that produces photochemical effects. |
actinic rays |
electromagnetic radiation, such as x-rays or ultraviolet light, that can produce an image on a photographic emulsion. |
algebraic fraction |
a fraction that has at least one algebraic variable or expression in the numerator or denominator, such as 1/x. |
angiogram |
an x-ray image of blood vessels that is taken after injecting a substance that absorbs x-rays into the blood. |
arteriography |
examination of the arteries by x-ray after injection with a radiopaque dye. |
barium sulfate |
an opaque insoluble white powder that is used as a pigment in paints and a filler for plastics and textiles, and is swallowed as a diagnostic aid in x-ray examination of the stomach and intestines. |
bremsstrahlung |
electromagnetic radiation, such as x-rays, produced by the sudden deceleration or acceleration of an electron caused by its approach to an atomic nucleus. |
CAT scan |
a cross-sectional image formed by a computerized combination of x-rays taken along a selected axis of the body, used as a diagnostic tool in medical treatment; computerized axial tomography scan. |
cross-stitch |
in sewing and embroidery, two stitches that cross to form an X. [1/3 definitions] |
dental hygienist |
a licensed specialist in preventive dental care, whose practice includes cleaning and x-rays, and who often works in a dentist's office. |
dosimeter |
a portable instrument that measures amounts of radiation, such as gamma rays or x-rays, to which a person has been exposed. |
electromagnetic wave |
a wave that contains a magnetic and electric component and that is created by an accelerating electric charge, such as a radio wave, x-ray, or light. |
encephalogram |
an x-ray photograph of the spaces of the brain normally filled with cerebrospinal fluid, partially replaced for the procedure by air or dye. |
-es1 |
used to form the third person sing. present tense of verbs that end in "s," "z," "ch," "sh," "x," or "y" that changes to "i". |
-es2 |
used to form the regular plural of nouns that end in "s," "x," "z," "ch," "sh," or "y" that changes to "i". |
fluorescence |
the giving off of electromagnetic radiation, esp. in the form of visible light, during or after exposure to radiation from another source such as ultraviolet light or x-rays. [1/2 definitions] |
fluoroscope |
a fluorescent screen used with x-rays or other radiation for viewing the internal structure of opaque objects such as the human body. |
Klinefelter's syndrome |
a congenital disorder that causes sterility in males, caused by an extra X chromosome. |
mammogram |
an x-ray picture of the breast, usu. made to check for cancerous growths. |
mammography |
photography of the breast by x-ray, usu. for detection of cancerous growths. |
multiplication sign |
a mathematical sign (x) indicating that the numbers before and after it are to be multiplied. |
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