Symbols for the number of copies of the haploid chromosome number or basic chromosome set. x Chem Symbol for mole fraction.
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Microwave band lying roughly between eight and 12 GHz; slight discrepancy between US and UK band limits. Widely used for 3 cm radar which is now correcdy designated Cx-band.
A transmission line with an X-shaped cross- section dielectric, used for guiding surface waves,
The height of the lower case letters from the baseline excluding extenders; specifically the height of the lower case x. See fig. at typeface.
Permanent condensation in early development of one or other X-chromosome in female mammalian cells, with accompanying repression of most of the genes on that chromosome,
Pair of electrodes in a cathode-ray tube to which horizontal deflecting voltage is applied in accordance with cartesian co-ordinate system.
The study of the emission of astronomical objects at X-ray wavelengths. Observations are made at high altitude above approx 150 km as the Earth