Definition of Siamese twins in English:

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Siamese twins

Pronunciation: /sīəˌmēz ˈtwinz/

plural noun

Dated term for conjoined twins.
Example sentences
  • Beneficiaries of Taiwan's new computerized lottery include two Siamese twins who made headlines in 1979 when they were successfully separated by a surgical operation.
  • Studying them might provide some insight into the survival issues faced by Siamese twins.
  • Then we'll go to school on Monday stuck like Siamese twins and then everyone will know about us.


Early 19th century: with reference to the Siamese men Chang and Eng (1811–74), who, despite being joined at the waist, led an active life.

For editors and proofreaders

Syllabification: Si·a·mese twins

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