Relating to a segment.
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seg·men·tal seg-'ment-əl adj
1 a) of, relating to, or having the form of a segment
b) situated in, affecting, or performed on a segment <a \segmental pancreas transplant using only the lower third of the organ> <\segmental versus total mastectomy>
2) of, relating to, or composed of somites or metameres: METAMERIC
3) divided into segments
4) resulting from segmentation
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seg·men·tal (seg-menґtəl) 1. pertaining to or forming a segment or a product of division, especially into serially arranged or nearly equal parts. 2. undergoing segmentation.Medical dictionary. 2011.