| 释义 |
‖ tomentum|təʊˈmɛntəm|
[L.: see above.]
1. Bot. The soft down or pubescence growing on the stems, leaves, or seeds of certain plants.
1699Sloane in Phil. Trans. XXI. 115 Having very soft hairs, down, or tomentum, much longer in proportion to the Seed, then any tomentum I know. 1793G. White Selborne (1853) 375 (Observ. Wild Bee) A sort of wild bee frequenting the garden-campion for the sake of its tomentum. 1866Treas. Bot. s.v. Centaurea, Leaves clothed on both surfaces with a white silky tomentum.
2. Anat. A downy covering or investment; spec. the flocculent inner surface of the pia mater, consisting of numerous minute vessels entering the brain and spinal cord (in full tomentum cerebri).
1811in Hooper Med. Dict. 1841Ramsbotham Obstetr. Med. (1855) 62 The ovum..is completely surrounded by a thick tomentum of minute filamentous, mossy villi.
Hence tomenˈtigerous, tomenˈtitious, toˈmentulose adjs.: see quots.
1860Mayne Expos. Lex., Tomentiger.., Entom., having the body hairy or downy: *tomentigerous.
1656Blount Glossogr., *Tomentitious (tomentitius), made of flocks or wool.
1895Funk's Stand. Dict., *Tomentulose. 1900B. D. Jackson Gloss. Bot. Terms 272 Tomentulose, slightly tomentose. |