perisperm

n. [植]外胚乳( 亦泛指胚乳, 包括内、 外胚乳)

词形变化

perisperms 复数 perisperms

释义与例句

n.
  1. 1.

    The layer of nutritive tissue, derived from the nucellus, that surrounds the embryo of a seed in some angiosperms.

    可数 不可数 生物

词源

From French périsperme. See peri- and sperm.

来源：wiktionary