tomentum

tomentum

noun

a network of tiny blood vessels between the cerebral surface of the pia mater and the cerebral cortex: Synonym: tomentum cerebri

数据来源：WordNet

1

Large tree native to eastern Europe and Asia Minor having leaves with white tomentum on the under side ; widely cultivated as an ornamental .

原产于欧洲东部和小亚细亚的一种高大树，其叶子下面被白色绒毛；广泛作为观赏植物栽培。
2

Branchlets with sparse woolly tomentum ; abaxial veins of leaves with white hairs and with sparse arachnoid tomentum .

有稀少似羊毛的绒毛层的小枝；叶背面脉具白色的毛和具具稀疏蛛丝状毛。