X-FIST
X-FIST stands for eXperimental û Fire Integration Support Team
X-FROG
X-FROG stands for Cross-correlation Frequency Resolved Optical Gating
X-PMGM
X-PMGM stands for Extended Parametric Meshless Galerkin Method
X-MZM
X-MZM stands for Cross-Coupled Mach-Zehnder Modulator
X-REF
X-REF stands for Cross-Reference
X/WIND
X/WIND stands for Crosswind
X/Q
X/Q stands for Relative Concentration
X-SAR
X-SAR stands for X-Band Synthetic Aperture Radar
X2O
X2O stands for Hexadecimal to Octal (conversion)
X/F
X/F stands for Cross-Fade