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What does X stand for?

X stands for X-ray (aviation letter code)

This definition appears very frequently and is found in the following Acronym Finder categories:

  • Military and Government

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We have 1 other meaning of X in our Acronym Attic

Samples in periodicals archive:

Using an Earth-orbiting telescope to record what Mars would look like if our eyes were sensitive to high-energy radiation, researchers have for the first time detected X-ray emissions from the planet.
In setting up the conditions for quantitative wavelength-dispersive electron microprobe analysis a number of parameters have to be defined for each element, namely accelerating voltage, beam current, and (for each element) x-ray line, spectrometer crystal, pulse-height analyser settings, background offsets, and counting times for peak and background.