conjoined twin: meaning, definition, pronunciation and examples
C1Medical/Formal/Journalistic
Quick answer
What does “conjoined twin” mean?
One of a pair of identical twins who are born physically connected to each other at some point on their bodies.
Audio
Pronunciation
Definition
Meaning and Definition
One of a pair of identical twins who are born physically connected to each other at some point on their bodies.
A term used in medicine and developmental biology to describe monozygotic twins whose bodies are joined in utero and at birth. The connection can range from superficial tissue to complex sharing of organs or limbs.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. Both variants use 'conjoined twin(s)' as the standard term.
Connotations
Identical. The term is clinical and carries the same medical precision and respectful tone in both dialects.
Frequency
Equally standard and common in medical and general discourse in both the UK and US.
Grammar
How to Use “conjoined twin” in a Sentence
[Noun Phrase] were born as conjoined twins.Doctors operated to separate the conjoined twins.The conjoined twins share a liver.Vocabulary
Collocations
Examples
Examples of “conjoined twin” in a Sentence
adjective
British English
- The conjoined twin sisters made a rare public appearance.
- It was a complex conjoined twin separation surgery.
American English
- The hospital has expertise in conjoined twin care.
- They faced a unique conjoined twin dilemma.
Usage
Meaning in Context
Business
Not applicable.
Academic
Standard term in medical, biological, and ethical literature. Used in research papers on embryology, surgical techniques, and bioethics.
Everyday
Used in news reports, documentaries, and general discussions about rare medical conditions. Often accompanied by explanatory context.
Technical
The precise medical term. Classified by the point of union: thoracopagus (chest), craniopagus (head), pygopagus (back/pelvis), etc.
Vocabulary
Synonyms of “conjoined twin”
Strong
Weak
Vocabulary
Antonyms of “conjoined twin”
Watch out
Common Mistakes When Using “conjoined twin”
- Using the term 'Siamese twins' in formal or sensitive contexts.
- Using 'conjoined' as a noun (e.g., 'He is a conjoined') instead of the full noun phrase 'conjoined twin'.
- Confusing 'conjoined twins' with 'identical twins'; all conjoined twins are monozygotic (identical), but not all identical twins are conjoined.
FAQ
Frequently Asked Questions
Yes, conjoined twins are always monozygotic (identical), arising from a single fertilised egg that does not fully separate during early development.
'Conjoined twins' is the current, standard medical and respectful term. 'Siamese twins' is an archaic term originating from Chang and Eng Bunker, born in Siam (now Thailand) in 1811. Its use is now considered outdated and potentially offensive.
Sometimes. Whether separation is possible depends on the extent and complexity of the shared anatomy (organs, circulatory system). Each case is unique, and surgery carries significant risk.
They are extremely rare, occurring in approximately 1 in 50,000 to 1 in 200,000 births. Many conjoined twins are stillborn or do not survive long after birth.
One of a pair of identical twins who are born physically connected to each other at some point on their bodies.
Conjoined twin is usually medical/formal/journalistic in register.
Conjoined twin: in British English it is pronounced /kənˌdʒɔɪnd ˈtwɪn/, and in American English it is pronounced /kənˌdʒɔɪnd ˈtwɪn/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think of 'con-' (together) + 'joined' (connected) + 'twin' = twins joined together.
Conceptual Metaphor
TWO ARE ONE (for a period): A conceptualization where two distinct individuals are perceived as a single physical entity until separated.
Practice
Quiz
Which of the following is the modern, preferred term for twins born physically connected?