Definition of rhamphotheca in English:

rhamphotheca

(also ramphotheca)

noun

Ornithology
  • The modified integument, usually horny but in some birds leathery, that covers a bird's jaws and forms the outer layer of the bill.

Origin

Late 19th century; earliest use found in James Graham Cooper (1830–1902). From scientific Latin rhamphotheca from ancient Greek ῥάμϕος beak + θήκη sheath.

Pronunciation

rhamphotheca

/ramfəˈθiːkə/