| X | a stimulant drug that is chemically related to mescaline and amphetamine and is used illicitly for its euphoric and hallucinogenic effects |
|---|---|
| X | the 24th letter of the Roman alphabet |
| X | the cardinal number that is the sum of nine and one |
| X | being one more than nine |
| X | the sex chromosome that is present in both sexes: singly in males and doubly in females |
| X | a radiogram made by exposing photographic film to X rays |
| X | electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target |
| X | the horizontal axis in a plane coordinate system |
| X | relating to genes or characteristics or conditions carried on the X chromosome |
| X | hereditary pattern in which a dominant gene on the X chromosome causes a characteristic to be manifested in the offspring |
| X | a gene located on an X chromosome |
| X | hereditary pattern in which a recessive gene on the X chromosome results in the manifestation of characteristics in male offspring and a carrier state in female offspring |