agnathous
/ˈæɡ.nə.θəs/
agnathous adjective: jawless.
Adjective
agnathous (not comparable)
- Jawless.
- The Onchidiidæ are described as agnathous, but I am confident of having observed the jaw figured.1876, William G. Binney, “On the Lingual Dentition, Jaw, and Genitalia of Carelia, Onchidella, and Other Pulmonata”, in Proceedings of the Academy of Natural Sciences of Philadelphia, page 185
- The mouth is a transverse slit, which shows no teeth, nor any jaws properly so called, and therefore affords an apparent support to the agnathous theory of the Ostracodermi.1900, Ramsay Heatley Traquair, “Notes on Drepanaspis Gmündenensis, Schlüter”, in Geological Magazine, page 158
- Afflicted by or characteristic of agnathia.
- Dr Underhill exhibited an agnathous and hydrocephalic fœtus. This was an instance of the rare abnormality due to defect of the lower jaw.1886, “Exhibition of Specimens: Meeting V”, Transactions of the Edinburgh Obstetrical Society, volume 11, page 79
- Upon this view an agnathous fœtus may be regarded as sometimes due to a posterior dichotomy, which has ultimately become a complete separation, and in which the two fœtuses have developed equally during a considerable part of intra-uterine life.1893, “Proceedings of the Anatomical Society of Great Britain and Ireland: November 1892”, Journal of Anatomy and Physiology, volume 27, page xvii
- Synonyms:
- agnathic
Examples of agnathous in a sentence
- This and related agnathous (jawless), finless forms inhabited shallow seas or estuarine habitats[…].1997, Gene S. Helfman, The Diversity of Fishes, Blackwell Science,, →ISBN, page 152:
- Parenthetically, this line treatment suggests an attempt to mimic the agnathous (jawless) head, if we suppose that the jaw area was colored suitably dark in contrast to the face proper.2007, James Brown, “Sequencing the Braden Style within Mississippian Period Art and Iconography”, in Ancient Objects and Sacred Realms...
- In all the neonates examined from the partially agnathous strain, there was no obvious agenesia of the lower mandible.1964, M. W. Fox, “Anatomy of the Canine Skull in Low-grade Otocephaly”, Canadian Journal of Comparative Medicine and Veterinary Science...
Synonyms of agnathous
Origin of agnathous
From Ancient Greek ἀ- (a-, “without”) + Ancient Greek γνάθος (gnáthos, “jaw”) + -ous, equivalent to a- + -gnathous.
Questions about agnathous
- What does agnathous mean?
- Agnathous means jawless.
- How do you use agnathous in a sentence?
- This and related agnathous (jawless), finless forms inhabited shallow seas or estuarine habitats[…].
- What part of speech is agnathous?
- Agnathous is an adjective.
- How do you pronounce agnathous?
- Agnathous is pronounced /ˈæɡ.nə.θəs/.
Words near agnathous in the dictionary
Source and license
Adapted from Wiktionary: agnathous (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.
Last updated:
Cite this entry: “agnathous.” Word.ws, https://word.ws/agnathous. Based on Wiktionary, CC BY-SA 4.0.