segmental
a . 部分的,断节的,由断节构成的
部分的,断节的,由断节构成的
segmental adj 1 :
divided or organized into speech segments or isolable speech sounds 2 :
having the body divided into successive metameres or segments ,
as in earthworms or lobsters [
synonym : {
metameric },
{
segmental }, {
segmented }]
Segmental \
Seg *
men "
tal \,
a .
1 .
Relating to ,
or being ,
a segment .
[
1913 Webster ]
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 .
[
1913 Webster ]
{
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 .
[
1913 Webster ]
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