| 释义 |
venule|ˈvɛnjuːl|
[ad. L. vēnula, dim. of vēna vein n. Cf. F. veinule and veinulet.]
A small or minor vein.
a. Bot.1850Ogilvie, Venules,..the name given to the last ramifications of the veins of a leaf, which intermingle frequently, and form the skeleton. 1857T. Moore Handbk. Brit. Ferns (ed. 3) 8 The branches of the veins are venules, and the branches of the venules are veinlets. 1866J. Smith Ferns Brit. & For. (1879) 101 Venules arcuately or angularly anastomosing, producing two or more excurrent free veinlets.
b. Anat.a1852Macgillivray Nat. Hist. Dee Side (1855) 171 The minute glandular bodies are all situated on the venules, and are of a circular form. 1876Trans. Clinical Soc. IX. 91 The white cells accumulate in the small venules in surprising numbers. 1899Allbutt's Syst. Med. VIII. 826 The venules on the skin of the nose and cheeks of old people. |