Siamese twin

noun

: one of a pair of congenitally united twins

Etymology

from Chang †1874 and Eng †1874 congenitally united twins born in Siam

First Known Use

1829, in the meaning defined above

Time Traveler

The first known use of Siamese twin was in 1829

See more words from the same year

Style

“Siamese twin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Siamese%20twin. Accessed 15 Dec. 2024.

Copy Citation

Siamese twin

noun

: either of a pair of human or animal twins born joined together

Siamese twin

noun

Si·a·mese twin ˈsī-ə-ˌmēz-

-ˌmēs-

: either of a pair of conjoined twins

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