(genetics) Associated with the X chromosome.

plural of X-junction

(of films) strictly reserved for adult viewing, pornographic

A circle in the middle of a shooting target's bullseye used to determine the winner in the event of a tie.

plural of X-stool

plural of X-chair

plural of X-stretcher

(mathematics) A root; a zero; a point at which a line crosses the x-axis of a Cartesian grid, where y is 0.

(computing, trademark) Former name of macOS; itself formerly known as Mac OS X.

plural of x-intercept