Definition of Noonan syndrome in English:

Noonan syndrome

(also Noonan's syndrome)


  • An inherited (autosomal dominant) syndrome typically characterized by short stature, facial dysmorphism, webbed neck, congenital heart disease, and various other abnormalities, resembling Turner's syndrome but without sex chromosome abnormalities.


1960s. From the name of Jacqueline Anne Noonan (b. 1928), U.S. paediatrician, who first described this syndrome (with D. A. Mehnke) in 1963 ( Jrnl. Pediatrics 63 468–70) + syndrome. In β form from the genitive of Noonan + syndrome.


Noonan syndrome

/ˈnuːnən ˌsɪndrəʊm/