Agnathous

//ˈæɡ.nə.θəs// adj

adj ·Rare ·Advanced level

Definitions

Adjective
  1. 1
    Jawless. not-comparable

    "The Onchidiidæ are described as agnathous, but I am confident of having observed the jaw figured."

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

    "Dr Underhill exhibited an agnathous and hydrocephalic fœtus. This was an instance of the rare abnormality due to defect of the lower jaw."

Synonyms

All synonyms
agnathicagnathicjawless

Example

More examples

"The Onchidiidæ are described as agnathous, but I am confident of having observed the jaw figured."

Etymology

From Ancient Greek ἀ- (a-, “without”) + Ancient Greek γνάθος (gnáthos, “jaw”) + -ous, equivalent to a- + -gnathous.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.