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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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