rhamphotheca

[医]嘴鞘

词形变化

rhamphothecae 复数 rhamphothecae

释义与例句

n.
  1. 1.

    A thin horny sheath of keratin on the outer surface of a bird's beak

词源

From Ancient Greek ῥάμφος (rhámphos, “beak”) + theca.

来源：wiktionary