noun
- A congenital disorder caused by having an extra 21st chromosome; results in a flat face and short stature and mental retardation.
- synonyms: mongolism, mongolianism, Down's syndrome, Down syndrome
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). trisomy 21. Retrieved September 21, 2026, from http://smartdefine.org/trisomy_21/definitions/1317319 |
| Chicago | WordNet. 2010. "trisomy 21" http://smartdefine.org/trisomy_21/definitions/1317319 (accessed September 21, 2026). |
| Harvard | WordNet 2010, trisomy 21, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/trisomy_21/definitions/1317319>. |
| MLA | WordNet. "trisomy 21" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/trisomy_21/definitions/1317319> |