X

n23

X-RAY

noun. an electromagnetic dispersion of brief wavelengths generated by bombarding a heavy metal objective with high-energy electrons in a vacuum

XXX SYNDROME

an uncommon chromosomal disorder marked by the existence of three X chromosomes. Many impacted females are physically and cognitively normal.

XXXX SYNDROME

a chromosomal disorder wherein a female has four X chromosomes instead of the typical couple. Impacted females usually have small