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testicle Line breaks: tes|ticle
Pronunciation: /ˈtɛstɪk(ə)l/

Definition of testicle in English:


Either of the two oval organs that produce sperm in men and other male mammals, enclosed in the scrotum behind the penis. Also called testis.
Example sentences
  • You may be more at risk of testicular cancer if you have an undescended testicle, a family history of the disease or a previous testicular tumour.
  • The position of the testicles has been found to be a diagnostic sign of situs inversus totalis.
  • The rationale for treatment of the undescended testicle is the prevention of potential sequelae.
North American informal cojones
vulgar slang balls, knackers, nuts, rocks
British vulgar slang bollocks, goolies


Pronunciation: /tɛˈstɪkjʊlə/
Example sentences
  • The renal and testicular veins show many irregularities when the left inferior vena cava persists.
  • In a small number of cases, the child may have both testicular and ovarian tissue.
  • Subfertility may be related to an underlying malignancy, such as a testicular or pituitary tumor.


Late Middle English: from Latin testiculus, diminutive of testis 'a witness' (i.e. to virility).

  • The ancient Romans felt that a man's testicles testified that he was male. They formed the word testiculus from Latin testis ‘witness’, the source also of attest (late 16th century); detest (Late Middle English) which originally meant to denounce; protest (Late Middle English); testify (Late Middle English); and intestate (Late Middle English) ‘without a witnessed will’. The testicles were the ‘witnesses’ of the man's virility.

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