NCIt definition : Situated farthest from a point of attachment or origin, as of a limb or bone; or directed
away from the midline of the body.;
Alternative definition : CDISC: Situated farthest from a point of reference.; NCI-GLOSS: In medicine, refers to a part of the body that is farther away from the
center of the body than another part. For example, the fingers are distal to the shoulder.
The opposite is proximal.;