Phrase guide

Klinefelter syndrome

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

A genetic condition in which a person is born with two X chromosomes and one Y chromosome.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

syndrome in males that is characterized by small testes and long legs and enlarged breasts and reduced sperm production and mental retardation; a genetic defect in which an extra X chromosome (XXY) is present in the male

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: Klinefelter's syndrome, XXY-syndrome

Antonyms: none provided

Broader terms: syndrome

History

Etymology

Named after Harry Klinefelter, who identified the condition in the 1940s.

Across languages

Translations

11 source translations are retained for this English entry.

  • Chinese Mandarin: 克氏症候群 (Kèshì zhènghòuqún) — genetic condition
  • Chinese Mandarin: 克蘭費爾特症候群 /克兰费尔特症候群 (kèlánfèi'ěrtè zhènghòuqún) — genetic condition
  • French: syndrome de Klinefelter — genetic condition
  • German: Klinefelter-Syndrom — genetic condition
  • Indonesian: sindrom Klinefelter — genetic condition
  • Japanese: クラインフェルター症候群 (Kurainferutā shōkōgun) — genetic condition
  • Malay: sindrom Klinefelter — genetic condition
  • Polish: zespół Klinefeltera — genetic condition
  • Portuguese: síndrome de Klinefelter — genetic condition
  • Spanish: síndrome de Klinefelter — genetic condition
  • Turkish: Klinefelter sendromu — genetic condition