Definition of rhynchocephalian in English:

rhynchocephalian

(also rhyncocephalian)

adjective

Zoology
  • Of or relating to the diapsid reptile order Rhynchocephalia (infraclass Lepidosauromorpha), which comprises such superficially lizard-like forms as the modern tuataras (genus Sphenodon) and various Mesozoic fossil forms, known collectively as beak-heads.

noun

Zoology
  • A rhynchocephalian reptile; a beak-head.

Origin

Mid 19th century. From scientific Latin Rhynchocephalia, order name (A. Günther 1867, in Philos. Trans (Royal Soc.) 157 626; from rhyncho- + ancient Greek κεϕαλή head + scientific Latin -ia, after Rhynchocephalus, genus name) + -an.

Pronunciation

rhynchocephalian

/ˌrɪŋkə(ʊ)kɛˈfeɪlɪən//ˌrɪŋkə(ʊ)sɪˈfeɪlɪən/