xi ['zī, 'ksī] -n

  1. the 14th letter of the Greek alphabet

xin·ter·cept ['eks-'in-tər-,sept] -n

  1. the x-coordinate of a point where a line, curve, or surface intersects the x-axis

xi·phi·ster·num [,zī-fə-'stər-nəm, ,zi-] -n

  1. xiphoid process

xi·phoid ['zī-,fȯid, 'zi-] -n, adj

  1. xiphoid process

xiphoid process -n

  1. the third and lowest segment of the human sternum

xir·ra·di·a·tion [,eks-i-,rā-dē-'ā-shən] -n

  1. x-radiation