Definition: 'Siamese Twins'
Siamese twinsType: Term
1. originally, a much-publicized conjoined pair of twins (xiphopagus) born in Siam (present-day Thailand) in the 19th century; this term has since come into general lay usage for any type of conjoined twins, but is incorrect.
The definition information for Siamese twins is provided by Stedman's. You can search our medical dictionary here.