different between agnatha vs agnathia

English

Etymology

From Agnatha, from Ancient Greek ?- (a-, “without”) + ?????? (gnáthos, “jaw”).

Pronunciation

• enPR: ?g?n?-th?, IPA^(key): /?æ?.n???/, /æ??næ.??/

Noun

agnatha (plural agnathas)

1. An agnathan.

Anagrams

• Hagåtña, ataghan

English

Etymology

Ancient Greek ?- (a-, “without”) + ?????? (gnáthos, “jaw”) +? -ia.

Pronunciation

• enPR: ?g-n??thi-?, IPA^(key): /æ??ne?.?i.?/

Noun

agnathia (uncountable)

1. (pathology) A birth defect in which the mandible is missing.
   • 1831, William West, translation of Gabriel Andral, A Treatise on Pathological Anatomy, Hodges and Smith, volume 2, page 283:

     When there is agnathia, instead of the inferior maxillary bone we find nothing but a kind of tubercle formed of skin, cellular tissue, fat, and some few muscular fibres.

   • 1907, Francis Delafield and T. Mitchell Prudden, A Text-Book of Pathology, eighth edition, William Wood, page 304

     The lower jaw may be absent (agnathia).

   • 2006, Mark I. Evans et al., Prenatal Diagnosis, McGraw-Hill, ?ISBN, page 240:

     As such, it is often accompanied by agnathia, a congenital absence of the mandible[…].

Related terms

• agnath
• agnatha
• agnathan
• agnathous

Translations

References

• agnathia in The Century Dictionary, New York, N.Y.: The Century Co., 1911.