siamese twin
C1/C2Formal, medical, literary/figurative
Definition
Meaning
Either of a pair of identical twins who are born physically joined together at some part of their bodies.
Used metaphorically to refer to two people or things that are inseparably linked, or two concepts, organisations, or items that are so closely connected they function as one unit.
Linguistics
Semantic Notes
The term originates from Chang and Eng Bunker (1811–1874), conjoined twins from Siam (now Thailand). While still used in medical literature, the term is increasingly considered dated and potentially offensive in general contexts. Preferred modern terms are 'conjoined twins' in medical contexts. The metaphorical use remains common.
Dialectal Variation
British vs American Usage
Differences
Usage is largely identical. Both varieties use the term in medical/historical contexts and in metaphorical extensions.
Connotations
Increasingly viewed as anachronistic and potentially insensitive in both varieties when referring to people. The metaphorical use carries no negative connotation.
Frequency
Higher frequency in historical texts; modern usage prefers 'conjoined twins'. Metaphorical use remains stable.
Vocabulary
Collocations
Grammar
Valency Patterns
be + Siamese twinslike + Siamese twinsrefer to + X and Y as + Siamese twinsVocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “joined at the hip (figurative equivalent)”
Usage
Context Usage
Business
Rare. Could be used metaphorically: 'The two departments are like Siamese twins—you can't reform one without the other.'
Academic
Used in medical history, biology, and sometimes in sociology/literature for metaphorical analysis.
Everyday
Mostly in its metaphorical sense: 'Those two friends are like Siamese twins.' Awareness of potential offensiveness is growing.
Technical
Medical term, though 'conjoined twins' is now standard. Specifications like 'thoracopagus twins' are more precise.
Examples
By Part of Speech
noun
British English
- The pioneering surgery to separate the Siamese twins was front-page news.
- Historically, they were the most famous Siamese twins.
American English
- The museum had an exhibit on the original Siamese twins, Chang and Eng.
- Metaphorically, the two issues are Siamese twins in the political debate.
Examples
By CEFR Level
- The two brothers were like Siamese twins, always together.
- In the 19th century, Siamese twins were often exhibited in sideshows, which seems shocking today.
- The novelist used the image of Siamese twins as a powerful metaphor for the inseparable bond between the two nations.
- While 'Siamese twin' is an accepted historical term, contemporary medical ethics mandates the use of 'conjoined twins' to avoid ethnic stereotyping.
Learning
Memory Aids
Mnemonic
Think of Siam (old name for Thailand) + twins = the famous historical twins from Siam who were joined.
Conceptual Metaphor
INSEPARABILITY IS PHYSICAL CONJOINMENT; CLOSE ASSOCIATION IS SHARING A BODY.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Не переводите как "сиамский близнец" в современном медицинском контексте – это устаревший термин. Современный эквивалент – "сросшиеся близнецы". В переносном значении перевод адекватен.
Common Mistakes
- Using 'Siamese twins' to refer to any identical twins (incorrect).
- Using the term insensitively in modern contexts referring to people.
- Misspelling as 'Siamise' or 'Siameze'.
Practice
Quiz
In modern sensitive usage, what is the preferred term for 'Siamese twins'?
FAQ
Frequently Asked Questions
It can be considered dated and potentially offensive when referring to people, as it derives from a specific historical case and ethnic origin. The modern, neutral medical term is 'conjoined twins'.
Yes, it is commonly used metaphorically to describe two things that are inseparably linked (e.g., 'poverty and crime are often Siamese twins'). This usage is generally uncontroversial.
It comes from Chang and Eng Bunker (1811–1874), conjoined twins born in Siam (now Thailand). They toured the world and were widely known, leading to the term's adoption.
Yes, all conjoined twins are monozygotic (identical), originating from a single fertilised egg that fails to separate completely.
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