Definify.com
Webster 1913 Edition
Segmental
Seg-men′tal
,Adj.
1.
Relating to, or being, a segment.
2.
(Anat. & Zool.)
(a)
Of or pertaining to the segments of animals;
as, a
segmental
duct; segmental
papillae. (b)
Of or pertaining to the segmental organs.
Segmental duct
(Anat.)
, the primitive duct of the embryonic excretory organs which gives rise to the Wolffian duct and ureter; the pronephric duct.
– Segmental organs
. (a)
(Anat.)
The embryonic excretory organs of vertebrates, consisting primarily of the segmental tubes and segmental ducts
. (b)
(Zool.)
The tubular excretory organs, a pair of which often occur in each of several segments in annelids. They serve as renal organs, and often, also, as oviducts and sperm ducts. See Illust. under
– Sipunculacea
. Segmental tubes
(Anat.)
, the tubes which primarily open into the segmental duct, some of which become the urinary tubules of the adult.