XC.
Symbol Capacitive reactance.
XENON
A rare gas.
XENON ARC LAMP.
A high intensity light that excites xenon gas
between two electrodes.
XL.
Symbol inductive reactance.
XLR CONNECTOR.
A shielded 3-conductor microphone plug.
XOFF.
An abbreviation for the ASCII
transmission-control character meaning
“Transmitter off.”
XON.
An abbreviation for the ASCII
transmission-control character meaning
“Transmitter on.”
X-RAY EMISSION.
Penetrating radiation similar to light, but
with shorter wavelength, that can penetrate
human tissue.
XTAL
Short for crystal.