X

X  

Xa

Xanthophyll   x axis   X-Band  

Xe

Xe   X Engine   Xenobiotic   Xenon  

xi

xi   X-Intercept   XLR Connector   XML   X-pentomino  
X ray   X-Ray Crystallography   X-Ray Diffraction Pattern   X-Ray Spectrum   X-Ray Tube  

Xy

Xylene   Xylol