Agnathic

//æɡˈnæθɪk// adj

Definitions

Adjective
  1. 1
    Jawless. not-comparable

    "[…] the heads are inverted and agnathic (lacking a lower jaw) […]"

  2. 2
    Afflicted by or characteristic of agnathia. not-comparable

    "[…]an imperforate pharynx which existed in an agnathic lamb."

Etymology

From Ancient Greek ἀ- (a-, “without”) + γνάθος (gnáthos, “jaw”) + -ic.

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