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Prader-Willi syndrome

British  
/ ˌprɑːdəˈvɪlɪ /

noun

  1. a congenital condition characterized by obsessive eating, obesity, mental retardation, and small genitalia

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of Prader-Willi syndrome

C20: after Andrea Prader (1919–2001) and Heinrich Willi (1900–71), Swiss paediatricians

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

“We share the Soleno team’s deep commitment to the Prader-Willi syndrome community and look forward to leveraging our experience and capabilities to expand Vykat XR’s reach to benefit more patients,” Gano said.

From Barron's Apr. 6, 2026

Soleno, which develops treatments of rare diseases, is known for its Vykat XR drug to treat the extreme hunger caused by rare genetic disorder Prader-Willi syndrome.

From The Wall Street Journal Apr. 6, 2026

“Most diseases are due to some dysregulation of RNA,” including Prader-Willi syndrome and certain muscular dystrophies and cancers, says Vivian Cheung, an RNA biologist at the University of Michigan.

From Science Magazine Mar. 21, 2024

Mr Price also has Prader-Willi syndrome, septo-optic dysplasia and a learning disability.

From BBC Jul. 14, 2023

While it is uncommon, chronic disordered eating, including a genetic condition called Prader-Willi syndrome that results in constant hunger and binge eating, can cause stomach rupture.

From Washington Post Nov. 21, 2022

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