velamen

n. 膜, 根被 [医] 帆, 膜

词形变化

velamens 复数 velamens velamina velamina 复数

释义与例句

n.
  1. 1.

    A covering membrane or velum

    医学
  2. 2.

    A spongy, usually pale, multiseriate epidermis (i.e. consisting of multiple layers of cells) covering the roots of some kinds of plants, especially plant species with an epiphytic or semi-epiphytic habit. Examples include various orchid and Clivia species

    生物 植物学

词源

Borrowed from Latin vēlāmen.

来源：wiktionary