a process for producing an image of a single plane of an object excluding all other planes, as by using CT scan or ultrasound, in diagnostic medicine, seismic surveys, etc.
Origin:
< Gr tomos, a piece cut off (see -tomy) + -graphy
See tomography in American Heritage Dictionary 4
noun
Any of several techniques for making detailed x-rays of a predetermined plane section of a solid object while blurring out the images of other planes.