• synonyms


[sahy-uh-meez, -mees]
  1. of or relating to Siam, its people, or their language.
  2. Thai(def 3).
  3. twin; closely connected; similar.
  4. Informal. dual; combined; twofold or two-way: a Siamese sprinkler.
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noun, plural Si·a·mese.
  1. a native of Siam.
  2. Thai(def 2).
  3. Siamese cat.
  4. (usually lowercase) a standpipe placed outside a building close to ground level, having two or more openings so that fire engines can pump water to the sprinkler system of the building.
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Origin of Siamese

First recorded in 1685–95; Siam + -ese
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for siamese

Contemporary Examples of siamese

Historical Examples of siamese

British Dictionary definitions for siamese


noun plural -mese
  1. See Siamese cat
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  1. characteristic of, relating to, or being a Siamese twin
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adjective, noun
  1. another word for Thai
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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

Word Origin and History for siamese



"of or pertaining to Siam," 1690s; see Siam + -ese. Also from 1690s as a noun meaning "native of Siam." the original Siamese twins (exhibited from 1829) were Chang and Eng (1814-1874), Thai-Chinese natives of Siam who settled in the U.S. Hence Siamesed (adj.) "joined in the manner of Siamese twins" (1830). Siamese cat is attested from 1871.

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Online Etymology Dictionary, © 2010 Douglas Harper