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conjoined twins

British  

plural noun

  1. Non-technical name: Siamese twins.  twin babies born joined together at some point, such as at the hips. Some have lived for many years without being surgically separated

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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They added: "We witness first-hand the medical challenges that these children and their families endure, which makes the portrayal of conjoined twins as a form of entertainment or spectacle especially problematic."

From BBC

The actress, who has portrayed famous public figures and even a pair of conjoined twins, says her current role on Broadway has been the most challenging.

From New York Times

Lori and George Schappell, conjoined twins whose skulls were partly fused but who managed to lead independent lives, died on April 7 in Philadelphia.

From New York Times

The twins, listed by Guinness World Records as the oldest living conjoined twins, died April 7 at the Hospital of the University of Pennsylvania, according to obituaries posted by Leibensperger Funeral Homes of Hamburg.

From Seattle Times

An uplifting insight into the lives of seven-year-old conjoined twins, who weren't expected to live more than a few days.

From BBC