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Synonyms

identical twin

American  

noun

  1. one of a pair of twins who develop from a single fertilized ovum and therefore have the same genotype, are of the same sex, and usually resemble each other closely.


Etymology

Origin of identical twin

First recorded in 1885–90

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

James Warren Whittaker was born on Feb. 10, 1929, in Seattle, 10 minutes before his identical twin brother, Louis.

From The Wall Street Journal • Apr. 15, 2026

Elliott meets, and is attracted to, Joey’s identical twin brother, the gay Jack, a successful businessman who explains that Joey has suffered serious psychological problems.

From The Wall Street Journal • Feb. 13, 2026

Yet it's what Dr Chris van Tulleken, who hosts the BBC's What's Up Docs alongside identical twin brother Dr Xand confesses to having.

From BBC • Oct. 25, 2025

Se Youn “Steve” Kim, 41, and his identical twin brother, Hee Youn “Ted” Kim, 41, were arrested Thursday morning by federal authorities and pleaded not guilty.

From Los Angeles Times • Sep. 12, 2025

And then, to impress her, I rotated my arm so she could see the identical twin on the other side.

From "Anthem of a Reluctant Prophet" by Joanne Proulx

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