Agnathia
/ˌæɡˈneɪθiə/noun
A congenital condition characterized by the partial or complete absence of the lower jaw.
Did you know?The term is built from the same Greek word for “jaw” used in anatomical names such as gnathion and prognathism.
Etymological Timeline
Ancient Greek
Greek
ἀ- (a-)
“A privative prefix meaning “without” or “lacking.””
Ancient Greek
Greek
γνάθος (gnáthos)
“Jaw, especially the lower jaw.”
Late 19th Century
Medical Greek/Latin
agnathia
“A scientific formation meaning absence or lack of a jaw.”
20th Century
Medical English
agnathia
“A congenital malformation involving partial or complete absence of the mandible.”
Modern English
English
agnathia
“The clinical condition of being born with an absent or severely underdeveloped lower jaw.”
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