D defs.my
Entry 2 senses Webster, 1913

Segmental

· Seg·men·tal · IPA /sɛɡˈmɛntəl/
01 a. Relating to, or being, a segment.
  1. 1.
    Relating to, or being, a segment.
  2. 2.
    Of or pertaining to the segments of animals; as, a segmental duct; segmental papillae.(Anat. & Zool.)
Phrases & compounds
Segmental duct — the primitive duct of the embryonic excretory organs which gives rise to the Wolffian duct and ureter; the pronephric duct.
Segmental organs — The embryonic excretory organs of vertebrates, consisting primarily of the segmental tubes and segmental ducts
Segmental tubes — the tubes which primarily open into the segmental duct, some of which become the urinary tubules of the adult.