roentgen ray
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x-ray
(eks'rā),1. The ionizing electromagnetic radiation emitted from a highly evacuated tube, resulting from the excitation of the inner orbital electrons by the bombardment of the target anode with a stream of electrons from a heated cathode. Synonym(s): roentgen ray Compare: glass rays, indirect rays.
2. Ionizing electromagnetic radiation produced by the excitation of the inner orbital electrons of an atom by other processes, such as nuclear delay and its sequelae.
3. Synonym(s): radiograph
roentgen ray
n.
See x-ray.
roentgen ray
See x-ray, def. 1.
x-ray
(rā)1. The ionizing electromagnetic radiation emitted from a highly evacuated tube, resulting from the excitation of the inner orbital electrons by the bombardment of the target anode with a stream of electrons from a heated cathode.
2. Ionizing electromagnetic radiation produced by the excitation of the inner orbital electrons of an atom by other processes, such as nuclear delay and its sequelae.
3. A radiograph.
Synonym(s): roentgen ray.
Synonym(s): roentgen ray.
Roentgen,
Wilhelm K., German physicist and Nobel laureate, 1845-1923.roentgen - the international unit of exposure dose for x-rays or gamma rays.
roentgen ray - Synonym(s): x-ray
roentgenograph - Synonym(s): radiograph
x-ray
(rā)1. Ionizing electromagnetic radiation emitted from a highly evacuated tube, resulting from excitation of inner orbital electrons by bombardment of the target anode with a stream of electrons from a heated cathode.
2. Ionizing electromagnetic radiation produced by the excitation of the inner orbital electrons of an atom by other processes, such as nuclear delay and its sequelae.
3. Synonym(s): radiograph.
roentgen
a superseded international unit of x- or γ-radiation; it is the quantity of x- or γ-radiation such that the associated corpuscular emission per 0.001293 g of air produces, in air, ions carrying 1 electrostatic unit of electrical charge of either sign. Abbreviated R. Now replaced by coulomb/kg (C/kg); see coulomb. 1 R = 2.58 × 10−4 C/kg; 1 C/kg = 3876 R.
roentgen equivalent man (rem)
see rem.
roentgen equivalent physical (rep)
see rep.
roentgen ray
x-ray.
Patient discussion about roentgen ray
Q. Is an X- Ray dangerous to my fetus? I fell down while I am pregnant and was sent to the ER. I was given an x- ray there, is the radiation dangerous to my fetus?
A. As far as I know one x-ray cannot harm your fetus since there is not enough radiation there to harm it. If you are worried consult a Doctor.
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