Word.ws English Dictionary

Down syndrome

Syllables: Down syn·dromeUK/daʊn ˈsɪndɹəʊm/US/daʊn ˈsɪndɹoʊm/

Down syndrome noun: a genetic disorder caused by the presence of all or part of a third copy of chromosome 21 (a chromosomal excess), whereby the patients typically have a delay in cognitive ability and physical growth, as well as a small head and tilted eyelids.

down syndrome: a genetic disorder caused by the presence of all or part of a third copy of chromosome 21 (a...
Image: Andreas Bohnenstengel, CC BY-SA 3.0 de, via Wikimedia Commons

Noun

Down syndrome (uncountable)

  1. (Australia, Canada, Ireland, New Zealand, US, usually) A genetic disorder caused by the presence of all or part of a third copy of chromosome 21 (a chromosomal excess), whereby the patients typically have a delay in cognitive ability and physical growth, as well as a small head and tilted eyelids.

Down syndrome meaning in Hindi, Tamil, Telugu and Arabic

Down syndrome in Hindi

genetic disorder caused by a chromosomal excess
डाउन सिंड्रोम ḍāun siṇḍrom

Down syndrome in Tamil

டவுன் நோய்க்குறி, டவுன் நோய்த்தொகை, வழக்கத்திற்கு மாறாக

Down syndrome in Telugu

genetic disorder caused by a chromosomal excess
డౌన్ సిండ్రోము ḍaun siṇḍrōmu

Down syndrome in Arabic

genetic disorder caused by a chromosomal excess
مُتَلَازِمَة دَاوْن
More languagesFewer languages
Down syndrome in Malay
sindrom Down
Down syndrome in Indonesian
sindrom Down
Down syndrome in Persian
سندرم داون
Down syndrome in Vietnamese
hội chứng Down

Synonyms of Down syndrome

Forms of Down syndrome

alternative formDown’s syndrome

Origin of Down syndrome

Named after English physician John Langdon Haydon Down (1828–1896), who first described the condition as a distinct form of mental disability in the 1860s.

Words formed from Down syndrome

Questions about Down syndrome

What does Down syndrome mean?
Down syndrome means a genetic disorder caused by the presence of all or part of a third copy of chromosome 21 (a chromosomal excess), whereby the patients typically have a delay in cognitive ability and physical growth, as well as a small head and tilted eyelids.
What is Down syndrome in Hindi?
Down syndrome in Hindi is डाउन सिंड्रोम (ḍāun siṇḍrom). See Down syndrome meaning in Hindi.
What part of speech is Down syndrome?
Down syndrome is a noun.
How do you pronounce Down syndrome?
Down syndrome is pronounced /daʊn ˈsɪndɹəʊm/ (UK).

Words near Down syndrome in the dictionary

  1. down south
  2. Down St Mary
  3. down start
  4. down starts
  5. down style
  6. Down syndrome
  7. Down syndrome regression disorder
  8. Down syndromed
  9. down tack
  10. down tacks
  11. down the banks

Source and license

Adapted from Wiktionary: Down syndrome (page history and authors); down syndrome (Tamil Wiktionary) (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: en-au-Down syndrome.ogg.

Cite this entry: “Down syndrome.” Word.ws, https://word.ws/down_syndrome. Based on Wiktionary, CC BY-SA 4.0.